Laboratory and Field Instrumentation

pH mV °CO2ISE NTU

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pH mV °CO2ISE NTU

Innovation-friendliness has always been a part of WTW’scorporate culture. The Combibox multi-parameter system(1976), the first zero-potential-free oxygen sensor (1982) andthe 4-electrode conductivity sensor (1987) – since thecompany was founded by Dr. Karl E. Slevogt in 1945 WTW’snumerous pioneering activities have continually enhanced itsinnovative reputation.

...uniquely innovative

Contents page

WTW 2 – 3

General information about WTW instruments 4 – 6

pH, ISE, ORP 7 – 11

Oxygen (D.O.) 12 – 15

Conductivity 16 – 19

Multi-Parameter 20 – 23

Depletion/Respiration 24 – 25

Turbidity 26 – 27

The new 3xxi hand-held instrumentsA modern design, improved perform-ance features and an extended range ofproducts with numerous accessoriesincrease the attractivity of the well-

known WTW family of handheld instruments.Based on the professional system concept of the

previous models, the new 3xxi handheld instruments fulfil allrequirements for measuring pH, oxygen, salinity, conductivity,TDS and temperature – whether as single or multi-parameterinstruments – and guarantee reliable results.

The 315i, 330i and 340i series of handheld instruments repre-sent three levels of performance: from a very easy-to-use basicinstrument up to a high-end instrument with more than 500memory places according to GLP guidelines.

• Always ready for use with “low-power management”for continuous work for thousands of hours

• Always mobile with the MobiLab professional transportcase: with built-in measuring place and all the necessarycalibration and maintenance supplies

For more than 50 years WTW has been one of the leading manufacturers and suppliers of physicochemical analytical instruments for research and quality control,

as well as for the analysis of water and wastewater. Each year we invest over 10% of ourturnover in research and development.

inoLab® Level 3inoLab® – the new family of laboratory instruments – firmlybelongs in WTW’s tradition of developing instruments withthe highest degree of precision and performance. Heremodern technology is combined with flexibility, user-friendliness and innovation.

Whether for pH/mV, ORP or ISE determination, whether formeasuring temperature, oxygen, conductivity or salinity –either singly or in combination – InoLab® offers you a total ofthree different performance levels with which you can fulfil allthe demands placed by measuring accuracy, reliability andoperating comfort with ease.

The InoLab® Level 3 laboratory instruments: the future-orientedcombination of an intelligent multifunction box equippedwith all measuring functions with the possibility of con-nection to a terminal for universal use or directly to a PC.This means that signal processing takes place directly atthe workplace. Sim-ple, effective andwithout cable spa-ghetti. The highestdegree of measuringreliability for all ana-lytical measurementsof pH/mV, ORP, ISE,temperature, oxy-gen, conductivity andsalinity.

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We are doing something…to solve your quality assurance problems

... uniquely customer-oriented

Was wird gefordet...?

To measure is to make mistakes. This applies particularly to thecalibration of measuring instruments. In order to be able toquantify these errors the variation of the measured value isgiven in comparison to a national or international standard.

Reference materials are used in chemical analysis. Certainauthorities and institutes carefully measure such sub-stances (e.g. NIST in Gaithersburg, USA or PTB inBraunschweig, Germany) and their uncer-tainties are very accurately known anddocumented accordingly.

From these primary referencematerials further secondary,tertiary, etc. reference materialsare derived by comparativemeasurements. At each stagethe uncertainty resultingfrom the measuring agentsand methods is given incomparison to the primaryreference material. In all casesit is important that the cali-bration of the measuringsystem can be traced back to theparticular primary standard in anunbroken chain.

In pH measurement working referencebuffers are used which are obtained by com-parison with primary or secondary materials. WTWpH buffers meet these requirements. A certificate documentsthe uncertainty of the pH value.

What we can offer ...

The accuracy of a test agent must be monitored at regularintervals by calibration in order to ensure that it is functioningproperly. This task belongs to basic quality assurance andGood Laboratory Practise and is a fundamental requirement forthe certification of a QA system according to DIN ISO 9000,which is being attempted or achieved by a continually in-

creasing number of laboratories.

Proper calibration of a measuring instrumentrequires specially qualified personnel with

a thorough knowledge of the particu-lar instrument and the presence of

suitable calibration devices. WTWis available as a competent part-ner and can carry out this taskfor all WTW measuring systemsfor the determination of pH,conductivity and dissolvedoxygen.

We have been certified to ISO9001 since 1993. Our cali-

bration devices are based onnational standards. Calibration

agents for which no nationalstandard exists are prepared ac-

cording to national and internationalstandard methods.

We carry out a works calibration and providea calibration certificate.

We offer you:• Works calibration (without serial number)

certifying that the product is in accordance withthe technical data contained in the operatinginstructions (free of charge)

• Manufacturer’s test certificate: individual test certificate, proof for the purposes of DIN ISO 9000 (free of charge)

• Manufacturer’s certificate for calibrationsolutions (free of charge)

• CE declaration of conformity (free of charge) • Calibration certificate for measuring instruments

and signal generators (against invoice)

WTW traceable buffers in handy 250 ml and 1000 ml bottles

with dosing systemsTest and measuring kit for the measurement

of pharmaceutical water according to USP 24

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SimpleSimple operation means that measuring errorsare avoided. All function keys of the 315i can beoperated even when wearing gloves; automaticcalibration and AutoRead functions ensure stableand reproducible results. The multifunctionaldisplay for pH, oxygen, conductivity and tem-perature is always easy to read.

ProvenThe 330i Series has proven itself many timesover. For field use with a built-in datalogger forat least 500 data records. 330i Series instrumentshave a large multifunctional display, well-provencalibration methods and manual input of relevantdata. State-of-the-art energy-saving technologyallows continuous use for up to 3000 workinghours.

All-rounder340i Series instruments are extremely flexibleand have an optional mains power supply foruse both on-site and in the laboratory. A bi-directional interface for output to a printer orPC are well as the possibility of external controlunderline the universal character of this series.

Shock and impact-resistant.Accessories for mobile use:A comprehensive range of accessories is available for the 3xxirange of handheld meters. For example, the shock-absorbingrubber protective armoring with folding support protects theinstrument in the laboratory, during measurements at pro-duction sites and in the field.

Features• Handy• Waterproof• Easy to use• Low-power system allows

continuous operation for up to 3000 h• GLP-conform• Complete in SET

The 315i, 330i and 340i series of handheld meters stand for reliable measurements under difficult working conditions both in the laboratory and on site.

The instruments weigh only about 300 g and have an extremely impact-resistant housingthat is hose-proof to IP 66 and also meets the requirements of IP 67.

Handheld Meters

Model 315i 330i 340i

Display LCD display 60 x 45 mm visible area, simultaneous display of measurement, temperature, special characters

Sensor evaluation Depends on calibration results, shown on display

Operating period Up to 3000 hours with normal 4 x 1.5 V batteries (AA) up to 3000 hours continuous operation with AutoSwitchOff after 1 h (except logger operation) with batteries, optional mains power

supply, no rechargeable batteries

Protection type IP 66 / IP 67 to IEC 529

Dimensions 172 x 80 x 37 mm (H x B x D)

Weight Approx. 300 g

Certified to CE, TÜV/GS, UL and/or cETLus, CUL

Warranty 3 years

General technical data

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The SystemApart from the mobile case sets, a wide range of accessories isavailable such as different rubber armoring, carrying straps orsleeves to protect sensitive electrodes.

Ready to go! – Complete in SETAll the instruments in this series can now be purchased in indi-vidually put-together sets. For your basic equipment you canchoose the individual electrodes, sensors or cells – and theseto a favorable set price..

The key word is MobiLabOur professional case can be used asa mobile laboratory. It contains a workplatform with measuring beakers, aplug-in stand, all the necessary cali-bration and cleaning solutionsand waterproof short instruc-tions – simply Ready to go.

Laboratory MetersinoLab® Level 1, inoLab® Level 2 and inoLab® Level 3

inoLab® is there – and this means that WTW has again demonstrated its innovative abilityand performance with this newly developed family of laboratory instruments, as inoLab®

sets new standards for measuring pH, oxygen, conductivity and multiple parameters.A total of three function levels are available with which you can effortlessly meet all

requirements concerning measuring accuracy, reliability, operating comfort and flexibility.

inoLab® Level 1inoLab® Level 1 laboratory instruments. Level 1stands for accuracy and reliability for all para-meters. Ideal for pH/mV, ORP and ISE determi-nations. For measuring temperature, oxygen,conductivity and salinity. Simple and reliable.

Accurate and economical.

All instruments include:• Easy-to-read multifunctional display • Battery powered for maximum mobility• Easy-to-clean touch-sensitive keyboard, particularly

suitable for biological laboratories• Well-laid-out keys for simplifying complex

measuring functions• Ability to be used on the benchtop or on the wall

inoLab® Level 2Whether for pH/mV, redox or ISE determina-tions, or for measuring temperature, oxygen,

conductivity or salinity – the compact inoLab®

Level 2 laboratory instruments carry out precise standard mea-surements and also document them in a manner whichconforms to ISO 9000, AQS, GLP or GMP.

All instruments include:• A built-in printer (optional)• GLP supporting functions• Real-time clock for documentation• Datalogger with memory for

200 complete data records • Bi-directional RS232 interface

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Modelle Level 1 Level 2 Level 3

Display LCD 76 x 62 mm LCD 76 x 62 mm LCD graphics 58 x 58 mm (Terminal)

Operating period/ 3000 h with commercially available 4 x 1.5 V batteries With terminal: universal plug-in power Energy supply or mains power supply supply 230 VAC or 120 VAC

Without terminal: via PC keyboard interface

Protection type IEC 529 / IP 43 without built-in printer

Dimensions 230 x 210 x 70 mm (B x D x H) 250 x 300 x 70 mm (B x D x H) 70 x 300 x 250 mm (B x D X H) (Terminal)

Weight 1.3 kg 1.6 kg approx. 1.6 kg (Terminal)

Certified to CE, TÜV/GS, UL, CUL

Warranty 3 years on the instrument

Ready to go - SETInnovation that pays for itselfThe inoLab® laboratory instruments pursue a simple goal. Withthe ready-to-go SETs, you have everything you need, so thatyou can start your analysis immediately. The SETs save youtime and money too.

Start immediately – the inoLab® ready to go-SETs: • inoLab® Level 1 or Level 2 meter with passive multifunc-

tion box (can be used as an electrode stand and forstoring sensors and fixing the cables), a choice of sensors and wide range of accessories.

• The complete set for inoLab® Level 3: inoLab® Level 3, intelligent multifunction box, TerminalLevel 3 and “inoLab® pilot” software package, electrode,a choice of sensors and wide range of accessories.

• Easy handlingThe multifunction box can be used single-handed as a stand. This makes even difficult measurements easy.

• Goodbye cable spaghettiThe multifunction box provides space for storing unused cables and sensors.

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inoLab® Level 3The inoLab® Level 3 laboratory instruments – the state-of-the-art combination of an intelligent multifunction box equippedwith all measuring functions, with the possibility of connectionto a universal terminal or directly to a PC. In this way signalprocessing is carried out directly at the workplace. Simple,effective and no cable spaghetti. The highest performance forall analytical measurements of pH/mV, ORP, ISE, temperature,oxygen, conductivity and salinity.

Instrument characteristics:• Individually extendable for special applications• Simplified operation with keys for “RUN“ and “AutoRead“

at the multifunction box• Minimal cable lengths by connection to a

built-in socket field• No cable spaghetti – superfluous cables are

stored in the multifunction box• Terminal Level 3 with all functions for calibration,

documentation and data evaluation, digital plotterfunction, with optional built-in printer

• For direct connection to a PC with the “inoLab® pilot”control and evaluation software

The separation between the measuring point and theperipheral devices offers numerous additional functions.

Communication with PC:The ”inoLab® pilot“ software allows control via a PC, on-linedata monitoring or direct data transfer in Windows programssuch as Excel or Access.

Communication with Terminal:The universal terminal contains all functions for calibration,documentation and validation.

Communication via barcode:The connection of a barcode reader and/or a PC keyboardhelps with reliable sample recognition or with automation.

General technical data

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MultiCal® automatic calibration

AutoCal: automatic calibration with DIN buffersAutoCal-TEC: automatic calibration with WTW technical buffersConCal®: conventional calibration with any buffers ISECal: calibration with standard solutions

Laboratory pH MetersThe pH parameter occupies an important position in the laboratory.

After weighing and temperature measurement it is the third most frequently measuredparameter. With the inoLab® pH Level 1 to Level 3 WTW offers a family of laboratoryinstruments which meet all requirements from routine measurements through quality

checks and up to research applications.

inoLab® pH Level 3inoLab® pH Level 3 with Terminal Level 3: flexible and powerful

High-performance pH/mV/ion meter with graphics display anddigital recorder function for pH, temperature and ion-selectivemeasurement, automatic temperature compensation, highresolution (0.001 pH), MultiCal® calibration system, built-inmeasurement storage with GLP-conform documentation anddigital interface. PC keyboard interface for connecting anexternal keyboard or a barcode reader. Includes software for

direct control by PC. Option:with built-in printer (paperwidth 112 mm) and thermalpaper accepted for use inofficial documents.

Features• 5-point calibration by linear regression• Selectable buffer sets• Graphic evaluation possible• Built-in digital plotter• Connection for bar-code reader or PC keyboard• Selectable instrument language• Extended GLP functions

(measurements which can be validated)• Free-of-charge downloads for “inoLab® pilot” or terminal

Terminal Level 3

pH mV °CISEpHpHpH

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Model pH Level 1 pH Level 2 pH Level 3 pH/ION Level 2

Range/ pH: -2.000 ... +19.999 pH -2.000 ... +19.999 pHResolution -2.00 ... +19.99 pH

mV: -999.9 ... +999.9 mV -999.9 ... +999.9 mV -1999 ... +1999 mV -1999 ... +1999 mV

Temp.: -5.0 ... +105.0 °C -5 ... +99.9 °C / 0.1 °CConcentration: 0.01 ... 1999 mg/l

Accuracy pH: ±0.005 pH ±0.005 pH ±0.003 pH ±0.003 pH(±1 digit) ±0.01 pH ±0.01 pH ±0.01 pH

mV: ±0.3 mV ±0.3 mV ±0.2 mV ±0.2 mV ±1 mV ±1 mV ±1 mV ±1 mV

Temp.: ±0.1 K ±0.1 K ±0.1 K ±0.1 K

Temperature- automatically, manuallycompensation

AutoRead yes

Real-time clock – yes

Calibration MultiCal® automatic calibration:AutoCal 2-point 2-/3-point 2-/3-/5-point 2-pointAutoCal-Tec 2-point 2-/3-point 2-3-point 2-pointConCal® 1-/2-point 1-/2-point 1-/2-point 1-/2-pointISECal – – 2- and 3-point 2- and 3-point

Calibration – GLP-conform protocol of calibration; last calibration stored in memoryprotocol

Calibr. timer – adjustable, 1... 999 days

Sensor Depends on the calibration results, shown in displayevaluation

Limit values – manual limit input –with acoustic alarm

Data memory – 200 records 2000 records 200 records

Data output Via display Via display or interface Via display, interface Via display or interface or PC

Interface – Bidirectional RS 232 / analog

inoLab® pH Level 1simple and reliable

Very easy to use routine laboratory pH/mVmeter with large multifunctional displayfor pH and temperature, automatic tem-perature compensation, MultiCal® cali-bration system; for battery or mainsoperation.

inoLab® pH Level 2compact and communicative

Precision pH/mV meter with large multi-functional display for pH and temperature,automatic temperature compensation,MultiCal® calibration system, built-inmeasurement storage with GLP-conformdocumentation and digital interface.Option: with built-in printer (paper width112 mm) and thermal paper accepted foruse in official documents.

Features Level 1 and Level 2• Performance-oriented

instrument range• Simplified operator convenience• Suitable as bench and

wall-mounted models• Mains-independent• Country-specific units• Application-oriented displays

inoLab® pH Meter SETs Order No.

inoLab® pH Level 1 Simple and reliable pH meter, including SenTix® 41, passive multifunction box and accessories 1A10-1112

inoLab® pH Level 2 Compact precision pH meter with serial interface, including SenTix® 81, passive multifunction box and accessories 1A20-1114

inoLab® pH Level 2 Compact precision pH meter, additionally equipped with built-in printer for GLP-conform documentation, 1A21-1114including SenTix® 81, passive multifunction box and accessories

inoLab® pH Level 3 The intelligent pH measuring place, additionally equipped with built-in printer, 1A31-1114including terminal, SenTix® 81 and accessories

inoLab® pH Level 3 The integrated pH measuring place, with PC software/connection cable, including SenTix® 81 and accessories 1A32-1114

inoLab® pH/ION Level 2 With built-in printer for GLP-conform documentation, including SenTix® 81, passive multifunction box and accessories 1G21-1114

Other electrodes in SET or BNC versions are available on request

Technical data

pH mV °CISEpHpHpH

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Handheld pH Metershandy · waterproof · GLP-conform

WTW handheld pH meters are optimized for on-site use and field use, but can also be used in the laboratory. In particular the pH 340i, with its optional mains power

supply and serial interface, is suitable for applications in which precise measurements arerequired both in the laboratory and outside.

Model pH 315i pH 330i pH 340i – pH/ION 340i

Measuring range/ pH: -2.00 … +16.00 pH pH: -2.000 ... +19.999 pH resolution -2.00 … +19.99 pH

mV: -1999 … +1999 mV mV: -999.9 ... +999.9 mV -1999 … +1999 mV

Temp.: -5.0 … +105.0 °C Temp.: -5.0 ... +105.0 °C Conc.: 0,01 ... 1999 mg/l (only pH/ION 340i)

Accuracy pH: ±0.01 pH pH: ±0.005 pH pH: ±0.003 pH (±1 digit) at +15 … +35 °C at +15 … +35 °C

mV: ±0.3 mV at +15 °C … +35 °C mV: ±0.3 mV at +15 °C … +35 °C mV: ±0.2 mVTemp. ±0.1 K Temp. ±0.1 K Temp.: ±0.1 K

Temperature comp. automatically automatically, manually automatically, manually

Calibration alarm – 1 ... 999 days, adjustable 1 ... 999 days, adjustable

AutoRead yes yes yes

Calibration Simplified 1, 2 or 3-point calibration MultiCal® automatic calibration: with automatic buffer recognition AutoCal automatic 2 or 3-point calibration with DIN buffers AutoCal automatic 3-point calibration AutoCal-TEC automatic 2 or 3-point calibration with

with DIN buffers WTW technical buffers ConCal® conventional 1-point calibration with any buffers ISECal® 2 and 3-point calibration with standard solutions (pH/ION 340i)

Calibration protocol – yes yes

Data memory – 500 records 500 records

Data output Via display Via display Via display or interface

Interface – – Bidirectional RS 232 / analog

Handheld pH Meter SETs Order No.

pH 315i Robust and waterproof handheld pH meter, for battery operation, in set with SenTix® 41 2A10-1012

pH 330i Robust and waterproof handheld pH meter with datalogger, for battery operation, in set with SenTix® 41 2A20-1012

pH 340i Robust and waterproof handheld pH meter with datalogger and serial interface 2A30-1114with mains power supply, in set with SenTix® 81

pH/ION 340i Robust and waterproof handheld ionmeter with datalogger and serial interface 2G30-11131with mains power supply, in set with SenTix® 61 and TFK 325/HC

Other electrodes in SET are available on request

pH 315i Very robust and waterproofbattery-operated pH/mV meter.Measuring errors are avoidedby the silicone keypad withonly 5 keys and a simplifiedcalibration method withautomatic buffer recogni-tion and display for stan-dard buffers. AutoReadalso ensures stable and

reproducible results.

pH 330i Very robust and waterproof battery-operated pH/mV meter with built-indatalogger, real-time clock, GLP-sup-porting functions, display for calibrationswitchable between pH and mV.MultiCal® automatic calibration withbuffer recognition, automatic tempera-ture compensation.

pH 340i As pH 330i, but with additional analogand digital RS 232 output and mainspower supply as option

WTW handheld pH meters are available in three versions:

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pH mV °CISEpHpHpH

Buffer solutions

SenTix® electrodes

Robust · Shockproof · Waterproof ·Portable · Reliable · Standard pHmeasurement and pH measurementat depths down to 100 m

The WTW pH meters of the ProfiLinepH 197 series are both hose-proof (IP 66)and submersible (IP 67. They convincebecause of their high degree off opera-tor comfort and safe operator guidancevia the large multifunctional display. Theyare equipped with a carrying/supporthandle and carrying strap as standard.The portable pH meters are available in2 versions.

Model ProfiLine pH 197 – ProfiLine pH 197-S

Measuring range/ pH: -2.00 ... +16.00 pH, mV: -1250 ... +1250 mVresolution Temperature: -5.0 ... +99.9 °C

Accuracy pH: ±0.01 pH, mV: ±2 mV(± 1 digit) Temperature: ±0.1 K

Temperature compensation Automatically, manually

AutoRead Yes

Calibration MultiCal® automatic calibration

Data storage Ring memory for 50 pairs of measurements with data protection

Data output Via display or interface

Interface Unidirectional RS 232 interface, Model ProfiLine pH 197-S additionally with 2 analog recorder outputs

Operating time Continuous operation from mains supply; 1500 hours with rechargeable batteries with AutoSwitchOff after 1 h

Protection type IP 66 and IP 67 to IEC 529

Dimensions 230 x 185 x 90 mm (B x D x H)

Weight Approx. 1.5 kg

Certified to CE, TÜV/GS, UL, CUL

Warranty 3 years

Portable pH Meters Order No.

ProfiLine pH 197 Robust, waterproof, submersible pH/mV meter 100 350

ProfiLine pH 197-S As ProfiLine pH 197, but additionally with 2 analog recorder outputs 100 315

Measuring range pH 0 ...14 pH 0 ...14 pH 0 ...14 pH 0 ...14 pHOperating range °C 0 … 80 °C 0 … 80 °C 0 ...100 °C 0 ...100 °CReference electrolyt Gel Gel KCl 3 mol/l, Ag+-free KCl 3 mol/l, Ag+-freeInternal buffer pH = 7.0 ±0,25 pH = 7.0 ±0,25 pH = 7.0 ±0,25 pH = 7.0 ±0,25Membrane shape cylindrical cylindrical conical conicalMembrane resistance <1 GΩ at 25 °C <1 GΩ at 25 °C <600 MΩ at 25 °C <600 MΩ at 25 °CDiaphragm Fiber Fiber Platinum PlatinumShaft material Noryl Noryl Glass GlassShaft length / diameter 120 mm ±1 / 12 mm ±0.5 120 mm ±1 / 12 mm ±0.3 120 mm ±1 / 12 mm ±0.5 120 mm ±1 / 12 mm ±0.5Temperature sensor – built-in NTC (30 KΩ) – built-in NTC (30 KΩ)Connection (1) (2) (2) (2) (2) (2) (2) (1) (2) (2) (2) (2)Electrode cable (3) (4) (5) (4) (4) (5) (4) (3) (4) (4) (4) (4)Electrode plug (6)/(7) (6) (6) (7) (6)+(8) (6)+(8) (7) (6)/(7) (6) (7) (6) (7)

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(1): Plug head, (2): Fixed cable, (3): AS/DIN, AS/DIN-3 or AS/BNC, (4): Cable length 1 m, (5): Cable length 3 m, (6): DIN plug (7): BNC plug (8): Banana plug

Technical buffer solutions (1 liter) Order No.

TEP 4 1 x 1 l bottle: pH 4,01* 108 700

TEP 7 1 x 1 l bottle: pH 7,0* 108 702

Technical buffer solutions (250 ml) Order No.

TPL 4 1 x 250 ml bottle: pH 4,01* 108 800

TPL 7 1 x 250 ml bottle: pH 7,0* 108 802

* traceable back to NIST/PTB

More comfort, quality and precision

• The low-impedance membrane glass ensures that stablemeasurements are rapidly achieved even at low sampletemperatures

• The reference electrolyte with its low silver ion contenttogether with the temperature-insensitive platinumdiaphragm prevent interference by precipitated silver.

• SenTix® electrodes are robust and shockproof. A special mem-brane glass and the plastic shaft ensure mechanical stability.

• SenTix® with liquid electrolyte – the optimized outflowspeed rinses the platinumdiaphragm free and prevents

contamination by precipitates ordirt even during changes in tem-

perature; with new membraneglass for even quicker response.

• SenTix® H and HW ground diaphragm electrodes allowthe electrolyte outflow speed at the diaphragm to bealtered.

• The clever sliding closure prevents the electrolyte fromescaping during storage.

• Waterproof DIN or BNC plugs, either plug head system orwith fixed cables, can be selected.Se

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Working temperature range 0 … 100 °CReference electrolyte KCl 3 mol/l, Ag+-freeSensor PlatinumSensor shape Round, 4 mm dia.Diaphragm CeramicShaft material GlassShaft length / diameter 120 mm ±2 / 12 mm ±0.5Temperature sensor –Connection Plug HeadElectrode cable AS/DIN, AS/DIN-3 or

AS/BNCElectrode plug DIN plug or

BNC plug, as selected

Ion-selective electrodes

ORP measurements

Electrode type Mem- Model Measuring Reference Internal Bridge ISA/ Standard- pH forbrane2Type 500 Type 501 range mg/l electrode electrolyte electrolyte TISAB solution range determining

Order No. Order No. mol/l Order No.Order No. Order No. Order No. (conc. 10 g/l)

Bromide (Br-) S Br 500 Br 501 0.4...79000 ELY/BR/503 ISA/FK ES/Br 0-14 bromide106 277 106 503 5 x 10-6...1 106 575 140 110 120 120

Cadmium (Cd++) S Cd 500 Cd 501 0.01...11000 ELY/BR/503 ISA/FK – 2-12 cadmium106 288 106 508 10-7...10-1 106 575 140 110

Calcium (Ca++) L Ca 5001 Ca 5011 0.02...40000 ELY/BR/503 ISA/Ca ES/Ca 2.5-11 calcium,106 314 106 505 5 x10-7...1 106 575 140 120 120 200 magnesium3

Cloride (CI-) S CI 500 Cl 501 2...35000 ELY/BR/503 ISA/FK ES/CI 2-12 chloride106 282 106 510 5 x 10-5...1 106 575 140 110 120 140

Copper (Cu++) S Cu 500 Cu 501 0.0006...6400 ELY/BR/503 ISA/FK ES/Cu 2-12 copper, nickel3106 290 106 514 10-8...10-1 106 575 140 110 120 190

Cyanide (CN-)5 S CN 500 CN 501 0.2...260 ELY/BR/503 MZ/NH3/CN – 0-14 cyanide106 296 106 512 8 x 10-6...10-2 106 575 150 130

Fluoride (F-) S F 500 F 501 0.02... saturated ELY/BR/503 TISAB ES/F 5-7 fluoride, aluminum106 284 106 516 10-6... saturated 106 575 140 100 120 160 phosphate3, lithium3

Fluoroborate L BF 5001 0.09...10000 – 4 – 2.5-11 fluoroborate, boron(BF4

-)5 106 326 7 x 10-6...1

Iodide (I-) S I 500 I 501 0.005...127000 ELY/BR/503 ISA/FK ES/I 0-14 iodide, thiosulfate106 286 106 518 10 x 10-8...1-1 106 575 140 110 120 180 mercury

Lead (Pb++) S Pb 500 Pb 501 0.2...20000 ELY/BR/503 ISA/FK ES/Pb 4-7 lead106 275 106 526 10-6...10-1 106 575 140 110 120 100

Nitrate (NO3-)5 L NO 5001 NO 5011 0.4...62000 ELY/BR/503/NTISAB/NO3 ES/NO3 2.5-11 nitrate

106 318 106 523 7 x 10-6...1 106 576 150 120 120 220

Potassium (K+)5 L K 5001 K 5001 0.04...39000 ELY/BR/503/K ISA/K ES/K 2-12 potassium106 310 106 520 10-6...1 106 577 106 580 120 210

Sodium (Na+)5 G pNa 205-1000-S7 0.05...23000 – ISA/Na ES/Na >10 sodium106 375 2 x 10-6...1 150 125 120 222

Silver (Ag+)5 S Ag 500 Ag/S 501 0.01...108000 ELY/BR/503 ISA/FK – 2-12 silver106 292 106 501 10-7...1 106 575 140 110

Sulfide (S--)5 S Ag 500 Ag/S 501 0.003...32000 ELY/BR/503 4 – 2-12 sulfide106 292 106 501 10-7...1 106 575

Thiocyanate S SCN 500 0.3...58000 – ISA/FK – 2-10 thiocyanate(SCN-)5 106 294 5 x 10-6...1 140 110

1 Exchange measuring head2 GS = gas-sensitive combination electrode, S = solid state electrode, L = matrix electrode, G = glass electrode3 Titration4 Use according to operating instructions5 Formulations for additionally required solutions are given in the application steps and operating instructions

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R 502 ELY/IN/502106 975 170 120

or

R 503/P not106 570 required

or

R 503/D not106 571 required

Testing and maintenance supplies for ORP measurements Order No.

SORT/RH Reagents for regenerating ORP electrodes 109 730consisting of activation powder (10 g) and clorina powder (30 g)

RH 28 ORP buffer solution 109 7401 bottle of 250 ml: pH 7, UH = 427 mV

Type 500

Type 501 WTW offers a wide range of ion-selective electrodes and instruments. Type 500 electrodes are characterized by their very high quality. In contrast,Type 501 electrodes offer an outstanding price/performance ratio.

ORP measurements can be carried out with all WTW pH/mV meters

Optionally a PC keyboard or bar-code reader

can be connected for sample identification12

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Laboratory Oxygen Meters

inoLab® Oxi Level 3inoLab® Oxi Level 3 with Terminal Level 3 or PC software: flexible and powerful

inoLab® BOD/BSB Level 3versatile – precise – with BODn evaluation program

This laboratory oxygen meter has been speciallydeveloped for BODn measurements. A specialprogram allows BODn determination accord-ing to EN 1899-1. You can store up to 7 ofyour own routines for frequently occurringdilution ratios. A maximum of 30 measuringsamples each with 18 dilutions allow the man-agement of up to 540 diluted samples. TheinoLab® BSB/BOD Level 3 can also be used asa conventional high-end oxygen meter.

In combination with StirrOx® G with its auto-matic start/stop function the inoLab® BOD/BSBLevel 3 is the ideal measuring system for rou-tine oxygen measurement in the BOD5 deter-mination according to DIN EN 1899-1 andDIN EN 1899-2.

Special functions:• BOD/depletion• Determination of the

biochemical oxygen demand according to DIN EN 1899-1

• Determination of oxygen depletionaccording to DIN 38 414 P6

• Up to 5 samples for dilution water• Up to 30 measuring samples• Up to 18 dilutions per measuring sample• Up to 7 routines can be stored• Adjustable incubation time, 5 ... 30 days

High-performance oxygen meter with graphics display anddigital recorder function for oxygen measurement in the labo-

ratory. Automated functions such as air pressurecorrection, temperature compensation by theIMT method and OxiCal® rapid calibration makework easier. The built-in measurement store, thedigital output RS 232 and the optional built-inprinter (paper width 112 mm) guarantee QA-conform documentation.

Features• Built-in digital plotter• Graphic evaluation possible• Connection of bar-code reader

or PC keyboard• Automatic memory function

if bar-code reader is used• Selectable instrument language• Extended GLP functions• Limit input with acoustic alarm• Free-of-charge software downloads

for “inoLab® pilot” or terminal

Oxygen is one of the most frequently measured parameters in the laboratory. It plays a large role in the degradation of substances and the growth of microorganisms,

both in environmental technology and in biotechnology.The inoLab® Oxi Level 3 instrument is particularly suitable for monitoring such processes.

For routine measurements the inoLab® Oxi Level 2 is equipped with all the necessaryfunctions which are required for documentation according to GLP.

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Model Oxi Level 2 Oxi Level 3 BSB/BOD Level 3

Measuring range/ O2 concentration: 0.00 ... 19.99 mg/lResolution 0.0 ... 90.0 mg/l*

O2 saturation: 0.0 ... 199.9%0 ... 600%*

O2 part. pressure: 0.0 ... 199.9 mbar0 ... 1250 mbar

Temperature: -5.0 ... +50.0 °C* depends on oxygen sensor and medium

Accuracy O2 concentration: ±0.5% of value(±1 digit) O2 saturation: ±0.5% of value

Temperature: ±0.1 K

Temperature 0 ... +50 °C automatic via IMT compensationcompensation

Salinity Automatic from 0.0 ... 70.0,correction Adjustable via display

AutoRead Yes

Real-time clock Yes

Calibration OxiCal® rapid calibration in OxiCal®-SL

Data memory 200 records 2000 records max. 540 diluted samples and multiple dilution water

Data output Via display or interface Via display, interface or PC

Interface Bidirectional RS 232 / analog

Other For StirrOx® G For StirrOx® G with automatic AutoRead start and stopconnections (only power supply) and start/stop via key on StirrOx® G

via key on StirrOx® G

inoLab® Oxi Level 2compact and communicative

Standard laboratory oxygen meter with large multifunctionaldisplay for routine use in the laboratory. Automated functionssuch as air pressure correction, temperature compensation bythe IMT method and OxiCal® rapid calibration make work eas-ier. The built-in measurement store, the analog and digital out-put RS 232 as well as the optional built-in printer (paper width112 mm) guarantee QA-conform documentation.

The StirrOx® G can be operated by the inoLab® Oxi Level 2for BOD5 determination according to DIN EN 1899-1 resp.DIN EN 1899-2 with manual start/stop functions.

Features • Simplified operator convenience• Easy-to-clean touch-sensitive keypad• Mains-independent• Optional built-in printer• Country-specific units• ISO-conform documentation• Application-oriented displays

inoLab® Laboratory Oxygen Meter SETs Order No.

inoLab® Oxi Level 2 Including CellOx® 325, passive multifunction box and accessories 1B20-0111

inoLab® Oxi Level 2 With built-in printer, including CellOx® 325, passive multifunction box and accessories 1B21-0111

inoLab® Oxi Level 3 Including terminal, PC software, CellOx® 325-3 and accessories 1B30-0112

inoLab® Oxi Level 3 With built-in printer, including terminal, PC software, CellOx® 325-3 and accessories 1B31-0112

inoLab® Oxi Level 3 Without printer/terminal, with PC software, CellOx® 325-3 and accessories 1B32-0112

inoLab® BSB/BOD SETs Order No.

inoLab® BSB/BOD Level 3 Including PC software, terminal, StirrOx® G and accessories 1H30-0114

inoLab® BSB/BOD Level 3 Including terminal, printer, PC software, StirrOx® G and accessories 1H31-0114

inoLab® BSB/BOD Level 3 Without printer/terminal, with PC software, StirrOx® G and accessories 1H32-0114

KF 12 Karlsruhe bottle including 60 mm ground stopper, suitable for BOD5 determination, 205 700minimum order 10 bottles

Other sensors in SET are available on request

Technical data

14

Handheld Oxygen Metershandy · waterproof · GLP-conform

WTW handheld oxygen meters are suitable for checking both oxygen values on site and for laboratory measurements. In combination with galvanic oxygen

sensors DurOx 325 or CellOx® 325 (no polarization time required) the measuring system is ready for immediate use anywhere.

Model Oxi 315i Oxi 330i Oxi 340i

Measuring range/ O2 concentration: 0.00 … 19.99 mg/l (19.9 mg/l*) O2 concentration: 0.00 … 19.99 mg/l (19.9 mg/l*)resolution 0.0 … 90.0 mg/l (90 mg/l*) 0.0 … 90.0 mg/l (90 mg/l*)

O2 saturation: 0.0 … 199.9% (199%*) O2 saturation: 0.0 … 199.9% (199%*)0 ... 600% 0 … 600%

O2 part. press.: 0.0 … 199.9 mbar (199 mbar*)0 ... 1250 mbar

Temperature: -5.0 … +50.0 °C Temperature: -5.0 … +50.0 °C *if DurOx oxygen sensor is used *if DurOx oxygen sensor is used

Accuracy O2 concentration: ±0.5% of value O2 concentration: ±0.5% of value(±1 digit) O2 saturation: ±0.5% of value O2 saturation: ±0.5% of value

O2 part. press.: ±0.5% of valueTemperature: ±0.1 K Temperature: ±0.1 K

Temp. compensation 2% at 0 ... +40 °C

Air pressure comp. Automatic with built-in pressure sensor (500 … 1100 hPa)

Salinity correction 0 or 35.0 solid SAL Automatic from 0.0 ... 70.0, adjustable via display

Sensor evaluation Depends on calibration results, shown on display

Calibration alarm – 1 ... 999 days, adjustable 1 ... 999 days, adjustable

AutoRead Yes Yes Yes

Calibration OxiCal® rapid calibration in OxiCal®-SL or OxiCal®-D

Calibration protocol – _ Yes

Data memory – 500 records 500 records

Data output Via display Via display Via display or interface

Interface – – Bidirectional RS 232 / analog

Handheld Oxygen Meter SETs Order No.

Oxi 315i Handheld oxygen meter, including DurOx 325-3, professional case and accessories 2B10-0017

Oxi 330i Handheld oxygen meter, including DurOx 325-3, professional case and accessories 2B20-0017

Oxi 340i Handheld oxygen meter, including DurOx 325-3, professional case and accessories 2B30-0017

Oxi 340i Handheld oxygen meter with main power supply, including CellOx® 325-3, professional case and accessories 2B30-0112

Other sensors in SET are available on request

Oxi 330i Proven robust battery-operated hand-held meter with manual input func-tions, built-in datalogger, GLP-support-ing functions, automatic temperature,air pressure and salinity compensa-tion...

Oxi 340i As Oxi 330i, but with additionalanalog and digital RS 232 out-put and mains power supply asoption

Oxi 315i Simple, robust hand-held meter with simpli-fied keypad, withoutmemory function andwith no manual inputfacilities; in combinationwith DurOx 325 withits protective hood it isparticularly suitable formeasurements in thefish-farming sector.

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Complete as SET

WTW handheld oxygen meters are available in three versions:

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Oxygen Sensors

ProfiLine Oxi 197Robust · Shockproof · Waterproof ·Portable · Reliable · Standard oxygenmeasurement and oxygen measure-ment at depths down to 100 m

The WTW oxygen meters of the ProfiLineOxi 197 series are both hose-proof(IP 66) and submersible (IP 67). Theyconvince because of their high degreeof operator comfort and foolproof ope-rator guidance via the large multifunc-tional display. They are equipped with acarrying/support handle and carryingstrap as standard. The portable oxygenmeters are available in 2 versions.

Model ProfiLine Oxi 197 – ProfiLine Oxi 197-S

Measuring range/ O2 concentration 0.00 ... 19.99 mg/l, 0.0 ... 90.0 mg/lresolution O2 saturation 0.0 ... 199.9%, 0 ... 600%

Temperature -5.0 … +50.0 °C

Accuracy O2 concentration ±0.5% of value(±1 digit) O2 saturation ±0.5% of value

Temperature ±0.1 K

Air pressure compensation Automatic with built-in pressure sensor (500 ... 1100 hPa)

Temperature compensation Automatic with IMT compensation

Salinity correction Automatic from 0.0 ... 70.0, adjustable via display

Display LCD display 60 x 35 mm visible area, simultaneous display of measurement, temperature, special characters

AutoRead For reproducibility better than 0.05 mg/l

Calibration OxiCal® rapid calibration in OxiCal®-SL

Data storage Ring memory for 50 pairs of measurements with data protection

Data output Via display or interface

Interface Unidirectional RS 232 interface, Model ProfiLine Oxi 197-S additionally with 2 analog recorder outputs

Other connections 2-pole socket for built-in stirrer of oxygen sensor StirrOx® G.

Operating time Continuous operation from mains supply; 600 hours with rechargeable batteries with AutoSwitchOff after 1 h

Protection type IP 66 and IP 67 to IEC 529

Dimensions 230 x 185 x 90 (B x D x H)

Weight Approx. 1.5 kg

Certified to CE, TÜV/GS, UL, CUL

Warranty 3 years on the instrument

Portable oxygen meters Order No

ProfiLine Oxi 197 Robust, waterproof, submersible oxygen meter 200 350

ProfiLine Oxi 197-S As ProfiLine Oxi 197, but additionally with 2 analog recorder outputs 200 313

The sensor prices include the corresponding accessory case with spare parts and maintenance supplies

Oxygen sensors Order No.

StirrOx® G Self-stirring oxygen sensor for oxygen determination in Karlsruhe bottles 201 425and Winkler bottles, with OxiCal®-ST calibration and storage vessel

CellOx® 325 Galvanic oxygen sensor with OxiCal®-SL calibration and storage vessel, 201 533waterproof plug, cable length 1.5 m

DurOx 325-3 Galvanic oxygen sensor with OxiCal®-D calibration vessel, water proof plug, cable length 3 m 201 570

StirrOx® G for inoLab® Oxi Level 2, inoLab® OxiLevel 3 and Profiline 197

Self-stirring oxygen sensor – simul-taneous stirring and measurement

• Single-handed operation forrapid series measurements

• Constant approach flow forhigh reproducibility

• Immediately ready formeasuring – no polarizationperiod required

• Extremely low self-con-sumption of oxygen – only 0.008 µg h-1 (mg/l)-1

• Zero-current free• Incl. calibration vessel OxiCal®-ST• IMT temperature compensation• Membrane leakage monitoring

CellOx® 325

Covered membrane galvanic oxygen sensor

• Immediately ready formeasuring – no polarizationperiod required

• IMT temperature compensation

• Long working life – up to 6 months with one electrolyte filling

• Zero-current free• High signal resolution• Rapid response• Waterproof sensor (IP 68 – 2 bar)• Incl. calibration vessel OxiCal®-SL• Membrane leakage monitoring

DurOx 325only for handheld meters Oxi 3xxi

Covered membrane galvanic oxygen sensor

• Immediately ready formeasuring – no polarizationperiod required

• IMT temperature compensation

• Long working life – up to 6 months with one electrolyte filling

• Low approach flow• Zero-current free

• Waterproof sensor (IP 68 – 2 bar)• Incl. calibration vessel OxiCal®-D• With protective hood SK-D

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Laboratory Conductivity MetersConductivity is an important parameter that is often used for monitoring water quality.

In the laboratory sector this parameter has also increased in importance since theintroduction of USP 24 Guideline for pharmaceutical water.

WTW inoLab® Cond laboratory instruments meet all the requirements for measurements according to this standard.

inoLab® Cond Level 3inoLab® Cond Level 3 with Teminal Level 3 or PC software: flexible and powerful

High-performance laboratory conductivity meter with graphics display and digital recorder func-tion, parallel display of temperature and automatic temperature compensation. An integral measure-ment store with logger function and a real-time clock allow QA-conform dataacquisition. The optional built-in printer allows data printout on thermal paperaccepted for use in official documents.

20 °C or 25 °C can be set as reference temperature. Both TDS and salinity measure-ments are possible as well as conductivity and temperature. The ability to set differentcell constants means that other specialconductivity cells can be connected aswell as the TetraCon® 325 4-electrodeconductivity cell and LR 325/01 ultra-pure water conductivity cell.

An PC keyboard interface allows an ex-ternal keyboard or a barcode reader tobe connected.

inoLab® Cond Level 1 simple and reliable

Routine laboratory conductivity meter with large multifunc-tional display, parallel temperature display and automatic tem-perature compensation. 20 °C or 25 °C can be set as referencetemperature. Both TDS and salinity measurements are possible aswell as conductivity and temperature. The ability to set differentcell constants means that other special conductivity cells canbe connected as well as the TetraCon® 325 4-electrode con-ductivity cell and LR 325/01 ultrapure water conductivity cell.

inoLab® Cond Level 2 compact and communicative

Standard laboratory conductivity meter with large multifunc-tional display, parallel temperature display and automatictemperature compensation. An integral measurement storewith logger function and a real-time clock allow QA-conformdata acquisition. Data output can take place via the optional built-in printer on thermal paperaccepted for use for official documents or via the built-in RS 232 digital interface via a PC orexternal printer. 20 °C or 25 °C can be set as reference temperature. Both TDS and salinity measurements arepossible as well as conductivity and temperature. The ability to set different cell constants meansthat other special conductivity cells can be connected as well as the TetraCon® 325 4-electrodeconductivity cell and LR 325/01 ultrapure water conductivity cell.

Features Level 3• Built-in digital plotter• Graphic evaluation

possible• Connection of bar-code

reader or PC keyboard• Automatic memory

function if bar-codereader is used

• Selectable instrumentlanguage

• Extended GLP functions• Limit input with acoustic

alarm• Meets all the require-

ments of USP 24• Free-of-charge software

downloads for “inoLab®

pilot” or terminal16

Features Level 1 and Level 2• Performance-oriented

instrument range• Simplified operator

convenience• Suitable as bench and

wall-mounted models• Mains-independent• Country-specific units• ISO-conform

documentation• Application-oriented

displays• Meets all the require-

ments of USP 24

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ductivity Meters

Model Cond Level 1 Cond Level 2 Cond Level 3

Range/ Conductivity: 0.0 µS/cm ... 500 mS/cmResolution in 5 measuring ranges or AutoRange

additionally for K = 0.1 cm-1: 0.00 µS/cm ... 19.99 µS/cmK = 0.01 cm-1: 0.000 µS/cm ... 1.999 µS/cm

Temperature: -5.0 ... +99.9 °CSalinity: 0.0 ... 70.0TDS: 0 ... 1999 mg/lResistivity: 0.000 ... 1999 MΩcm

Accuracy Conductivity: ±0.5% of value(±1 digit) Temperature: ±0.1 K

Reference 20 °C or 25 °C, selectabletemperature

Cell constants 0.475 cm-1, 0.1 cm-1 and 0.01 cm-1 fixed; 0.475 cm-1, 0.1 cm-1 and 0.01 cm-1 fixed;freely selectable 0.25 ... 2.5 cm-1 and 0.09 ... 0.11 cm-1 freely selectable 0.25 ... 2.5 cm-1

Temperature Automatic, manual or switched offcompensation

Temperature • Non-linear function for natural water to EN 27 888 (DIN 38 404)coefficient • Linear compensation from 0.001 ... 2.999%/K

• No compensation

Calibration With 0.01 mol KCl

Real-time clock – Non-volatile Non-volatile

Data memory – 200 records 2000 records

Data output Via display Via display or interface Via display, PC or interface

Interface – Bidirectional RS 232 / analog Bidirectional RS 232 / analog

inoLab® Laboratory Conductometer SETs Order No.

inoLab® Cond Level 1 Simple and reliable conductometer, including TetraCon® 325, passive multifunction box and accessories 1C10-0111

inoLab® Cond Level 2 Compact precision conductometer with serial interface, including TetraCon® 325, 1C20-0111passive multifunction box and accessories

inoLab® Cond Level 2 Compact precision conductometer with additional built-in printer for GLP-conform documentation 1C21-0114including LR 325/01, passive multifunction box and accessories

inoLab® Cond Level 3 Flexible and powerful precision – the intelligent conductivity measuring place consisting of multifunction box and 1C30-0111universal terminal, with PC software/connection cable, TetraCon® 325 and accessories

inoLab® Cond Level 3 The intelligent conductivity measuring place with additional built-in printer, LR 325/01 and accessories 1C31-0114

inoLab® Cond Level 3 The integrated conductivity measuring place with PC software/connection cable; without printer/terminal 1C32-0114including LR 325/01 and accessories

Other measuring cells in SET are available on request

Technical data

Portable Conductivity Meters Order No.

ProfiLine LF 197 Robust, waterproof, submersible conductivity meter 300 350

ProfiLine LF 197-S As ProfiLine LF 197, but additionally with 2 analog recorder outputs 300 351

Model ProfiLine LF 197 – ProfiLine LF 197-S

Measuring range/ Conductivity: 0.0 µS/cm ... 500 mS/cm in 5 ranges, resolution additional 0.00 .. 19.99 µS/cm (at K=0.1 cm-1)

Temperature: -5.0 ... 99.9 °C/ ±0.1 K, Salinity: 0.0 ... 70.00TDS: 0 ... 1999 mg/l

Accuracy Conductivity: ±0.5% of value(± 1 digit) Temperature: ±0.1 K

Ref. temperature 20 °C or 25 °C, selectable

Cell constant 0.1 cm-1 fixed and 0.45 ... 1.30 cm-1, adjustable

Temperature comp. Automatic or manual

Temperature • Non-linear function for natural waters to EN 27 888 (DIN 38 404)coefficient • Linear compensation from 0.50 ... 3.00 %/K

• No compensation

Data storage Ring memory for 50 pairs of measurements (measurement, temperature) with data protection

Data output Via display or interface

Interface Monodirectional RS 232 interfaceModel ProfiLine LF 197-S additionally with 2 analog recorder outputs

Operating time Continuous operation from plug-in mains supply; or 150 ... 800 hours with rechargeable batteries (depends on conductivity) with AutoSwitchOff after 1 h

Protection type IP 66 and IP 67 to IEC 529

Dimensions 230 x 185 x 90 mm (B x D x H)

Weight Approx. 1.5 kg

Certified to CE, TÜV/GS, UL, CUL

Warranty 3 years for the instrument

17

Robust · Shockproof · Waterproof ·Portable · Reliable · Standard con-ductivity measurement and mea-surement at depths down to 100 m

The WTW conductivity meters of theProfiLine LF 197 series are both hose-proof (IP 66) and submersible (IP 67).They convince because of their highdegree of operator comfort and fool-proof operator guidance via the largemultifunctional display. They are e-quipped with a carrying/support han-dle and carrying strap as standard.

The portable conductivity meters areavailable in 2 versions.

Cond 315i The simple conductivity meter for meet-ing higher demands. With only 5 keysfor error-free measurement with paralleltemperature measurement, automatictemperature compensation, 4-electrodemeasuring technology

Cond 340i As Cond 330i, but with additional ana-log and digital RS 232 output and op-tional mains power supply

Cond 330i Robust and waterproof handheld con-ductivity meter for battery operation;with parallel temperature display, in-tegrated datalogger, GLP supportingfunctions, automatic and manual tem-perature compensation with lineartemperature function and non-linearfunction for ultrapure water and naturalwaters according to DIN 38 404 andEN 27 888. The temperature compen-sation can be switched off; either 20 °Cor 25 °C can be selected as the refer-ence temperature

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Handheld Conductivity Metershandy · waterproof · GLP-conform

Handheld conductivity meters are mainly used for monitoring on-line systems in process technology. This is why WTW handheld instruments are particularly

robust and can be used almost anywhere.

Handheld Conductivity Meter SETs Order No.

Cond 315i Robust and waterproof battery-operated handheld conductivity meter, 2C10-0011including TetraCon® 325, professional case and accessories

Cond 330i Robust and waterproof battery-operated handheld conductivity meter with datalogger, 2C20-0012including TetraCon® 325-3, professional case and accessories

Cond 340i Robust and waterproof battery-operated handheld conductivity meter with datalogger and serial interface, 2C30-0011including TetraCon® 325, professional case and accessories

Cond 340i Robust and waterproof handheld conductivity meter with datalogger and serial interface, 2C30-0114including LR 325/01, mains power supply, professional case and accessories

Other measuring cells in SET are available on request

WTW handheld conductivity meters are available in three versions:

Modelle Cond 315i Cond 330i Cond 340i

Measuring range/ Conductivity: 0.0 µS/cm … 500 mS/cm 0.0 µS/cm … 500 mS/cmresolution with 5 ranges in 5 ranges or AutoRange

in AutoRange 0.00 µS/cm ... 19.99 µS/cm (for K=0.1 cm-1)0.00 µS/cm ... 19.99 µS/cm 0.000 µS/cm ... 1.999 µS/cm (for K=0.01 cm-1) (for K=0.1 cm-1)

Temperature: -5.0 °C ... +105.0 °C -5.0 °C … +105.0 °CSalinity: 0.0 … 70.0 0.0 … 70.0 TDS: – 0 … 1999 mg/l Resistivity: 0.00 ... 1999 MΩcm 0.000 ... 1999 MΩcm

Accuracy Conductivity: ±0,5 % of value ±0.5 % of value (±1 digit) Temperature: ±0.1 K ±0.1 K

Ref. temperature Tref 25 °C 20 or 25 °C, selectable

Cell constant Fixed 0.475 cm-1, 0.1 cm-1 0.475 cm-1 0.1 cm-1 and 0.01 cm-1 fixed and0.25 ... 2.5 cm-1 and 0.09 ... 0.11 cm-1 adjustable

Temperature comp. Automatic, can be switched off Automatic, can be switched off

Temperature- • Non-linear function for natural waters (nLF) • Non-linear function for natural waters (nLF) coefficient to EN 27 888 (DIN 38 404) and to EN 27 888 (DIN 38 404) and ultrapure water function

ultrapure water function • Linear compensation from 0.01 ... 2.99%/K• No compensation • No compensation

Data memory – 500 records 500 records

Data output Via display Via display Via display or Interface

Interface – – Bidirectional RS 232 / analog

Complete as SET

Optionally with armoring

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• Highest degree of precision and linearity byoptimized cell geometry

• Extremely large measuring range with just one cell• Long-term cell constant stability with high-quality

abrasion-resistant graphite electrodes• With built-in temperature sensor as standard• Smallest immersion depth possible• No measuring errors even with very dirty

electrode – contact resistance on the electrodesurface is automatically compensated

• No measuring errors from cable influences• No measuring errors from primary or secondary

polarization effects• No measuring errors from alteration to the

electrical marginal field during contact with baseor side walls

• No danger of breakage owing to robust epoxycasting technique

TetraCon®

Conductivity Cells

Kit for measuring the conductivity

acc. to USP 24

For more than 50 years WTW has been one of the leading manufacturers worldwide of precisionconductivity meters and cells. The TetraCon® 4-electrode system is the perfect result of a logical,practice-oriented further development and sets a new standard for professional conductivity mea-surements. In comparison with conventional measuring cells with 2 electrodes, the TetraCon®

conductivity cell offers numerous technical advantages:

Kit for measuring the conductivity according to USP 24 Order No.

USP Kit 1 Kit for measuring the conductivity according to USP 24, 300 569consisting of LR 325/01 Ultrapure water cell, D01/T Glass flow-thru vessel, NIST traceable 15 µS standard with accuracy ±2% and 6R/SET/LabTesting set

USP Kit 2 As USP Kit 1, but flow-thru vessel made of stainless steel instead of D01/T 300 568 19

Order No.Electrode materialFlow-thru vesselShaft materialShaft lengthCell constant DiameterCable lengthMeasuring rangeTemperature rangeFilling volumeMin./max. immersion depth

Standard conductivity cell TetraCon® 325

301 960Graphite–Epoxy120 mmK = 0.475 cm-1

15.3 mm1.5 m1 µS/cm ... 2 S/cm*0 ... 90 °C–

36/120 mm

Special conductivity cell TetraCon® 325/S

301 602Graphite–Epoxy120 mmK = 0.491 cm-1

15.3 mm1.5 m1 µS/cm ... 2 S/cm*0 ... 90 °C–

40/120 mm

Ultrapure water con-ductivity cell LR 325/01

301 961V4A steel–V4A steel120 mmK = 0.1 cm-1

12 mm1.5 m0.001 µS/cm ... 300 µS/cm0 ... 100 °C 17 ml (without sensor)

35/110 mm

Trace conductivity cell LR 325/001

301 962V4A steelV4A steelV4A steel120 mmK = 0.01 cm-1

20 mm1.5 m0.0001 µS/cm ... 30 µS/cm0 ... 100 °C ca. 10 ml (without sensor)

35/110 mm

Conductivity flow-thru cellTetraCon® DU/T

301 252**Graphite–Epoxy155 mmK = 0.778 cm-1

– 1 m (only with KKDU 325) 1 µS/cm ... 2 S/cm*0 ... 60 °C 7 ml

–

* Measuring range depends on particular instrument, ** Adapter cable KKDU 325 (order no. 301 963), length 1 m, is necessary for the connection

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pH mV °CO2ISEMultiMultiMulti

inoLab® Level 1

inoLab® Level 3

Laboratory Multi-Parameter InstrumentsIn modern laboratories a large number of different measurements need to be made,

but the available space is limited. The inoLab® multi-parameter instruments reduce not only the space requirements, but also impress with their

outstanding price-performance ratio.

inoLab® pH/Oxi, inoLab® pH/Cond and inoLab® Multi Level 3

As high-end instruments the inoLab® pH/Oxi Level 3 ,theinoLab® pH/Cond Level 3 and inoLab® Multi Level 3 have aresolution of 0.001 pH units. They also have all the functionsnecessary for making ion selective measurements. With theinoLab® pH/Oxi Level 3 and the inoLab® Multi Level 3 oxygen ismeasured as %, mg/l or mbar. The inoLab® pH/Cond Level 3and the inoLab® Multi Level 3 can be used to measure thesalinity and TDS (Total Dissolved Solids) as well as the con-ductivity and specific resistance.

The optional built-in printer as well as the graphics displaywith operator guidance increase the measuring comfort andallow QA-conform documentation.

Features • 5-point calibration by

linear regression• Freely selectable buffer sets• Graphic evaluation possible• Built-in digital plotter• Connection for bar-code reader

or PC keyboard• Selectable instrument language• Limit input with acoustic alarm• Extended GLP functions• Free-of-charge downloads for

“inoLab® pilot” or terminal

inoLab® pH/Oxi, inoLab® pH/Cond and inoLab® Multi Level 1

The routine instruments inoLab® pH/Oxi Level 1 and inoLab®

pH/Cond Level 1 are favorably-priced models for initial pro-cessing of pH / oxygen and pH / conductivity measurementsrespectively. The inoLab® Multi Level 1 allows the measure-ment of pH and ORP, oxygen content, conductivity and salinityas well as the temperature. Their large multifunction displaymeans that they are suitable for standard measurements whereGLP-documentation is not required.

Features • Easy-to-clean touch-

sensitive keypad• Simplified operator

convenience• Bench and

wall-mounted models• Mains-independent• Country-specific units• Application-oriented

displays

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Level 3 pH measurement Oxygen measurement Conductivity measurement

Measuring range/ pH: -2.000... +16.000 O2 conc.: 0.00... 19.99 mg/l 0.0 µS/cm... 500 mS/cm in 5 ranges Resolution -2.00... +16.00 0.0... 90 mg/l* or AutoRange, in addition at:

mV: -999.9... +999.9 O2 sat.: 0.0... 199.9% K=0.01 cm-1 0.000... 1.999 µS/cm-1999... +1999 0... 600%* K=0.1 cm-1 0.00... 19.99 µS/cm

ISE con- O2 p.press.: 0.0... 199.9 mbar Temperature: -5.0... +99.9 °Ccentration: 0.01 … 1999 mg/l 0... 1250 mbar Salinity: 0.0... 70.0

TDS: 0... 1999 mg/l* depends on oxygen sensor and medium Spec. resistivity 0.000 ... 1999 MΩcm

Accuracy (± 1 digit) pH: ± 0.003 0.5% of value ± 1% of value± 0.01

mV: ± 0.2, ± 1

Temperature Automatic -5... +99.9 °C Automatic via IMT Linear and non-linear functions forcompensation with TFK 325 or built-in compensation 0...40 °C ultrapure water and natural waters

temperature sensor, or to DIN 38 404 and EN 27 888; canmanual -20... +130 °C be switched off

Temp. measuring range -5.0... +99.9 °C 0... +50 °C -5.0... +99.9 °CAccuracy (± 1 digit) ± 0.1 K ± 0.1 K ± 0.1 K

AutoRead For pH, oxygen and conductivity

Calibration MultiCal® 2-, 3- and 5-point With OxiCal®-SL Calibration with 0.01 mol KClISECal, 2 and 3-point ConCal® 1/2-point

Data memory 2000 records

Data output Via display, PC or interface

Interface Serial RS 232 interface, adjustable Baud rate, bidirectional

inoLab® Multi-Parameter SETs Order No.

inoLab® pH/Oxi Level 1 Simple and reliable pH and oxygen meter for routine work, 1D10-111410including Sentix® 81, CellOx® 325 and accessories

inoLab® pH/Oxi Level 3 Flexible and powerful – the intelligent pH and oxygen measuring place consisting of multifunction box and 1D30-111410universal terminal, with PC software/connection cable, Sentix® 81, CellOx® 325 and accessories

inoLab® pH/Oxi Level 3 The integrated pH and oxygen measuring place; with PC software/connection cable, without printer/terminal, 1D32-101410including Sentix® 81, CellOx® 325 and accessories

inoLab® pH/Cond Level 1 Simple and reliable pH and conductivity meter for routine work, 1E10-111401including Sentix® 81, TetraCon® 325 and accessories

inoLab® pH/Cond Level 3 Flexible and powerful – the intelligent pH and conductivity measuring place consisting of multifunction box and 1E30-111401universal terminal, with PC software/connection cable, Sentix® 81, TetraCon® 325 and accessories

inoLab® pH/Cond Level 3 The integrated pH and conductivity measuring place; with PC software/connection cable, without printer/terminal, 1E32-101401including Sentix® 81, TetraCon® 325 and accessories

inoLab® Multi Level 1 Simple and reliable multi-parameter meter for routine work, 1F10-111411including Sentix® 81, CellOx® 325, TetraCon® 325 and accessories

inoLab® Multi Level 3 Flexible and powerful – the intelligent pH, oxygen and conductivity measuring place 1F30-111411consisting of multifunction box and universal terminal, with PC software/connection cable, Sentix® 81, CellOx® 325, TetraCon® 325 and accessories

inoLab® Multi Level 3 Intelligent pH, oxygen and conductivity measuring place with additional built-in printer, 1F31-111411including Sentix® 81, CellOx® 325, TetraCon® 325 and accessories

inoLab® Multi Level 3 The integrated pH, conductivity and oxygen measuring place; with PC software/connection cable, 1F32-101411without printer/terminal, including Sentix® 81, CellOx® 325, TetraCon® 325 and accessories

Other electrodes/sensors in SET or BNC versions are available on request

Technical data

Level 1 pH measurement Oxygen measurement Conductivity measurement

Measuring range/ pH: -2.00... +16.00 O2 conc.: 0.00... 19.99 mg/l 0.0 µS/cm... 500 mS/cm in 5 ranges Resolution mV: -199.9... +199.9 0.0... 90 mg/l* or AutoRange, in addition at:

-1999... +1999 O2 sat.: 0.0... 199.9% K=0.01 cm-1 0.000...1.999 µS/cm0... 600%* K=0.1 cm-1 0.00... 19.99 µS/cm

O2 p.press.: 0.0... 199.9 mbar Temperature: -5.0... +99.9 °C0... 1250 mbar Salinity: 0.0... 70.0

TDS: 0... 1999 mg/l* depends on oxygen sensor and medium Spec. resistivity 0.000 ... 1999 MΩcm

Accuracy (± 1 digit) pH: ± 0.01 0.5% of value ± 1% of valuemV: ± 0.2, ± 1

Temperature Automatic -5... +99.9 °C Automatic via IMT Linear and non-linear functions forcompensation with TFK 325 or built-in compensation 0... 40 °C ultrapure water and natural waters

temperature sensor, or to DIN 38 404 and EN 27 888; canmanual -20... +130 °C be switched off

Temp. measuring range -5.0... +99.9 °C 0... +50 °C -5.0... +99.9 °CAccuracy (± 1 digit) ± 0.1 K ± 0.1 K ± 0.1 K

AutoRead For pH, oxygen and conductivity

Calibration MultiCal® 2-point With OxiCal®-SL Calibration with 0.01 mol KClConCal® 1/2-point

Data output Via display

inoLab® pH/Oxi, pH/Cond, Multi inoLab® pH/Oxi, Multi inoLab® pH/Cond, Multi

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pH/Cond 340i SET

Scope of supply: Professional case with built-in measuring place,pH/Cond 340i, pH electrode and conductivitycell as chosen, STH 320stand and calibration andmaintenance supplies

pH/Oxi 340i SET

Scope of supply: Professional case with built-in measuring place,pH/Oxi 340i, pH electrodeand oxygen sensor aschosen, STH 320 stand and calibration andmaintenance supplies

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pH mV °CO2MultiMultiMultiHandheld Multi-Parameter InstrumentsIn many applications today it is necessary to measure and document different parameters ata single location. In such situations the handheld multi-parameter instruments from WTWhave proved to be particularly useful. After from the cost benefits the customer also has allthe necessary electrodes and accessories clearly arranged in a professional transport case

which can also be used as a small field laboratory.

pH/Oxi 340i, pH/Cond 340i waterproof · robust · GLP-conform

The pocket-sized multi-talent

The hose-proof (IP 66) instrument with battery and mainsoperation also meets the requirements of IP 67 and is optimallysuited for use in the field, in laboratories or at production sites.

Simultaneous connection of a pH/ORP electrode and an oxygensensor or conductivity cell allows up to three parameters(including temperature) to be measured at the same time.

Features • Handy• Waterproof• Low-power system allows continuous

operation for up to 2500 h• Easy to use• GLP-conform• Complete in set

Multi-Parameter Instruments pH/Oxi 340i and pH/Cond 340i

WTW handheld multi-parameter instruments stand for precisemulti-parameter measuring technology. The pH/Oxi 340i forthe determination of pH, oxygen and temperature and thepH/Cond 340i for the determination of pH, conductivity andtemperature are favorably-priced alternatives to the single para-meter instruments for applications which require the measure-ment of several parameters. The instruments are hose-proofand also meet the requirements of IP 67. They are extremelyrobust and optimally suited for use in the field, in laboratoriesor at production sites.

Features • Handy• Waterproof• Low-power system allows continuous

operation for up to 2500 h• Easy to use• GLP-conform• Complete in set

Multi 340i SET 1

• Multi-parameterinstrument Multi 340i

• Professional case withbuilt-in measuring set-up,two STH 320 stands, two beakers, SM 325protective armoring and carrying strap with two cases

• Plug-in mains powersupply, calibration andmaintenance supplies,operating instructions

Multi 340i waterproof · robust · GLP-conform

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pH/Oxi 340i, pH/Cond 340i, Multi 340i pH/Oxi 340i, Multi 340i pH/Cond 340i, Multi 340i

pH measurement Oxygen measurement Conductivity measurement

Measuring range/ pH: -2.00 ... +16.00 O2 concentration: 0.00 ... 19.99 mg/l 1 µS/cm ... 500 mS/cmResolution mV: -1250 ... +1250 0.0 ... 90.0 mg/l* in 4 measuring ranges

O2 saturation: 0.00 ... 19.99% Salinity: 0.0 ... 70.0 0.0 … 600%*

* depends on oxygen sensor and medium

Accuracy pH: ± 0.01 pH ±0.5% of value ±1% of value(± 1 digit) mV: ± 1 mV

Temperature Automatic -5 ... +105.0 °C Automatic via IMT Linear and non-linear functionscompensation Manual -20 ... +130 °C Compensation from 0 ... 40 °C for ultrapure and natural waters

to DIN 38 404 and EN 27 888

Sensor evaluation Depends on calibration results, shown on display

Calibration alarm 1... 999 days, adjustable

AutoRead For pH, O2 and conductivity

Calibration 1-2 point calibration automatic calibrationwith technical buffers

Calibration protocol GLP-conform calibration protocol; last protocol stored in memory

Data memory 500 records

Data output Via display or interface

Interface Serial RS 232 interface, baud rate adjustable, bi-directional

Handheld Multi-Parameter Instrument SETs Order No.

pH/Oxi 340i Robust and waterproof handheld multi-parameter instrument with datalogger 2D30-101B20and serial interface for battery operation,including Sentix® 41-3, CellOx® 325-3, professional case and accessories

pH/Cond 340i Robust and waterproof handheld multi-parameter instrument with datalogger 2E30-101B02and serial interface for battery operation,including Sentix® 41-3, TetraCon® 325-3, professional case and accessories

Multi 340i Robust and waterproof handheld multi-parameter instrument with datalogger 2F30-101B22and serial interface for battery operation,including Sentix® 41-3, CellOx® 325-3, TetraCon® 325-3, professional case and accessories

Multi 340i Robust and waterproof handheld multi-parameter instrument with datalogger, 2F30-111B22serial interface and main power supply,including Sentix® 41-3, CellOx® 325-3, TetraCon® 325-3, professional case and accessories

Other electrodes/sensors in SET are available an request

Technical data

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Handheld Multi-Parameter Instrument pH/Oxi 340i with Sentix® 41-3 and CellOx® 325-3

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OECD · ISO · EN · DINOECD · ISO · EN · DINOECD · ISO · EN · DIN

Soil respiration measurements are used for forecasting, sur-veying and checking remediation work, for biodegradabilitymeasurements of substances (pesticides, fungicides, fertilizers,etc.) as well as for carrying out toxicity tests.

This determination is possible with the OxiTop® Control Systemand special, practically-tested measuring vessels in a veryaccurate, simple and favorably-priced way.

The expenditure for personnel and apparatus is considerablyreduced when compared with conventional methods.

OECDDetermination of biodegradability according to OECD 301 F / ISO 9408 / DIN EN 29 408

The determination of the biodegradability should be checkedbefore “new” chemicals are used for the first time, not only forenvironmental reasons but also to minimize disposal charges.

The sample prepared according to the instructions and ablank are stirred at a constant temperature for 28 days inclosed bottles.

The CO2 produced by degradation processes is removed fromthe gas space by means of an absorber so that the resultingnegative pressure is a measure of the biodegradability.

The continuous recording of the values in the OxiTop®-Cmeans that the required documentation can be guaranteed inan optimal manner.

WTW offers two systems that differ in the type of samplebottles used.

Depletion/RespirationThe investigation and monitoring of biological cleaning treatment processes are becoming

more and more important with respect to the environmental requirements such aswastewater treatment, soil remediation and waste treatment.

In order to determine the biodegradability of foodstuffs, pollutants, harmful substances orwaste substances and the microbial activity so-called respiration (depletion) measurements

are carried out. OxiTop® Control measuring systems are suitable for both aerobic and anaerobic determinations.

Soil respirationLaboratory method for determining the microbial soil respiration according to DIN 19 737

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omBiogas determinationDetermination of anaerobic degradation processes

Anaerobic degradation processes take place in the absence ofoxygen. In order to be able to fill the gas space above the samplewith inert gas the measuring bottle has side-mounted connectionswhich are sealed with septa. When anaerobic degradation has takenplace the dissolved CO2 can be driven off and then removed fromthe gas space by means of a CO2 absorber. The resulting pressuredifference is proportional to the CO2 concentration, the remainingoverpressure is proportional to the methane concentration.

The degradation process can be comfortably followed in the“pressure” operating mode of the OC 110.

The OxiTop®-C measuring system is also suitable for use inmicrobiology. The anaerobic determination and aerobic deter-mination systems mean that a wide range of possible methodsfor carrying out microbiological investigations is available; thispermits adaptation to specific requirements.

Model Complete OECD package / aerobic operation (including microbiology) Order No.

OxiTop® Control A6 Package for aerobic applications with 6 x 1000 ml measuring places, including Controller OC 110, 208 2206 OxiTop®-C measuring heads, 6 PF45/1000 sample bottles, PC communication program Achat OC, IS 6-Var stirrer platform and additional accessories

OxiTop® Control A12 Package for aerobic applications with 12 x 250 ml measuring places, including Controller OC 110, 208 22212 OxiTop®-C measuring heads, 12 PF45/250 sample bottles, PC communication program Achat OC, IS 12 stirrer platform and additional accessories

OxiTop® Control S6 Package for aerobic applications with 6 x 510 ml measuring places, including Controller OC 110, 208 1966 OxiTop®-C measuring heads, 6 PF600 sample bottles, PC communication program Achat OC, IS 6 stirrer platform and additional accessories

OxiTop® Control S12 Package for aerobic applications with 12 x 510 ml measuring places, including Controller OC 110, 208 19812 OxiTop®-C measuring heads, 12 PF600 sample bottles, PC communication program Achat OC, IS 12 stirrer platform and additional accessories

Complete soil respiration package / aerobic operation

OxiTop® Control B6M Package for soil respiration with 6 x 1000 ml measuring places, including Controller OC 110, 208 2326 OxiTop®-C measuring heads, 6 MG 1,0 measuring vessels with stopper adapters for OxiTop®-C, PC communication program Achat OC and additional accessories

OxiTop® Control B6 Package for soil respiration with 6 x 500 ml measuring places, including Controller OC 110, 208 2306 OxiTop®-C measuring heads, 6 PF 45/500 sample bottles (Duran), 6 OxiTop® AD/SK adapters, autoclavable, PC communication program Achat OC and additional accessories

Complete package for biogas determination / anaerobic operation (including microbiology)

OxiTop® Control AN6 Package for aerobic or anaerobic applications with 6 x 1000 ml measuring places, 208 225including Controller OC 110, 6 OxiTop®-C measuring heads, 6 MF45/1000 measuring bottles, PC communication program Achat OC, IS 6-Var stirrer platform and additional accessories

OxiTop® Control AN12 Package for aerobic or anaerobic applications with 12 x 250 ml measuring places, 208 227including Controller OC 110, 12 OxiTop®-C measuring heads, 12 MF45/250 measuring bottles, PC communication program Achat OC, IS 12 stirrer platform and additional accessories

Note: versions for 120 VAC/50/60 Hz on request

MicrobiologyMicrobiological growth and stress investigations: determination of the respiration rate

Features• Modular system for

respiration measurements• Selected accessories• Favorable package price

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NTUNTUNTUNTUTurbidity Meters

Turb 350 IR

Measuring principle Nephelometric (90° scattered light)

Light source IR-LED

Measuring range 0 ... 1100 NTU with AutoRange

Resolution 0.01 NTU from 0.00 ... 9.990.1 NTU from 10.0 ... 99.91 NTU from 100 ... 1100 NTU

Accuracy ±2% of value or±0.01 last decimal place in range 0 ... 500 NTU±3% of value in range 500 ... 1100 NTU

Reproducibility < ±1% of value or ±0.01 NTU

Calibration Automatic 1 ... 4 point calibration

Response time 6 ... 16 seconds

Protection type Designed to meet IP 67

Operating temperature 0 ... 50 °C

Energy supply 4 micro (AAA) alkaline manganese batteries, suitable for more than 1000 measurements

Certified to CE, TÜV/GS

Warranty 2 years

Order no. 600 310

Set of secondary standards 600 530

Turb 350 IR

Technical data and order no.

WTW offers different types of turbidity meter including suitable versions for measurements according to DIN EN ISO as well as US-EPA.

Battery-operated portable turbidity meter with infrared LED(860 nm) for measurements according to ISO 7027 / DIN/EN27 027 (EN ISO 7027) on a nephelometric basis and with arange of 0 to 1100 NTU. The AutoRange function switches themeasuring range automatically. The 1 ... 4-point calibration isvery convenient for the operator.

Pressing the CAL key switches the instrument to the calibrationmode. The calibration standards then only need to be insertedone after the other in a falling sequence. The instrument ispowered by 4 micro (AAA) alkaline manganese batteries whichare supplied with the instrument as are all the other necessaryaccessories such as calibration standards (0.02 – 10.0 – 100and 1000 NTU) and empty cuvettes.

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Turb 550 Turb 550 IR Turb 555 Turb 555 IR

MMeasuring principle Nephelometric Nephelometric Nephelometric Nephelometricratio method ratio method

transmission

MLight source Tungsten lamp IR-LED Tungsten lamp IR-LED

MMeasuring range NTU 0 ... 1000 0 ... 1000 0 ... 10000 0 ... 10000FNU – 0 ... 1000 – 0 ... 10000EBC – – 0 ... 2450 0 ... 2450Nephelos – – 0 ... 67000 –FAU – – – 0 ... 10000

Resolution 0.01 NTU from 0.00 ... 9.99 max. 0.0001 NTU from 0.0001 ... 9.9999 NTU0,1 NTU from 10,0 ... 99,9 0.001 NTU from 10.000 ... 99.999 NTU1 NTU from 100 ... 1000 0.01 NTU from 100.00 ... 999.99 NTU

0.1 NTU from 1000.0 ... 9999.9 NTU

Accuracy ±2% of value or ±0.01 NTU 0 ... 1000 NTU: ±2% of value or ±0.01 NTU1000 ... 4000 NTU: ±5% of value4000 ... 10000 NTU: ±10% of value

Reproducibility < ±1% of value or ±0.01 NTU < ±1% of value or ±0.01 NTU

Automatic measuring Yes Yesrange switching

Calibration Automatic 1 ... 3 point calibration Automatic 1 ... 5 point calibration

Response time < 3 seconds < 6 seconds

Sample volume 25 ml 25 ml

Interface RS 232, unidirectional RS 232, bidirectional

Clock / calendar Built-in real-time clock Built-in real-time clock

AQA functions Calibration interval monitoring Calibration interval monitoringcalibration protocol calibration protocol

password-protected access to calibration and configurationtime-controlled data transmission

Operating temperature +10 ... +40 °C 0 ... +50 °C

Power supply Plug-in power supply 100 - 240 VAC ±10% / 47 - 63 Hz Plug-in power supply 100 - 240 VAC ±10% / 47 - 63 Hz

Certified to CE, TÜV/GS, UL, CSA CE, TÜV/GS, UL, CSA

Order no. 600 100 600 110 600 200 600 210

Set of secondary standards 600 500 600 501 600 521 600 511

Laboratory turbidity meters for nephelometric measurementswith automatic 3-point calibration, RS 232 output, built-inreal-time clock and calibration interval monitoring. Measuringrange selection from 0.01 ... 1000 NTU is carried out auto-matically and for comparative measurements the current andprevious values can be shown on the 2-line display.

Scope of supply: instrument with integral short operating in-structions, accessory case with 2 empty cuvettes, 3 secondarystandards (0.02 – 10.0 – 1000 NTU) and cuvettes cleaningtissue.

High-precision laboratory turbidity meters with a wide mea-suring range of 0.0001 to 10000 NTU for all turbidity mea-suring applications from ultrapure and drinking watermeasurements, through quality assurance in the soft drinksindustry up to checking wastewater.

The measuring system with its 4 detectors allows not onlynephelometric (90° scatter) measurements and transmissionmeasurements, but also ratio measurements in which theinfluences of stray light and sample color are reduced.

The scope of supply includes everything necessary for themeasurement, from calibration standards to empty cuvettes.

Turb 550 / Turb 550 IR Turb 555 / Turb 555 IR

Technical data and order no.

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Please contact me

Please make a quotation

Please send me the CD-ROM“WTW General Catalog Water”(free of charge)

Please send me the CD-ROM“WTW Principles of MeasuringTechnique” (free of charge)

Model Order no.

Model Order no.

Reply card

Please contact me

Please make a quotation

Please send me the CD-ROM“WTW General Catalog Water”(free of charge)

Please send me the CD-ROM“WTW Principles of MeasuringTechnique” (free of charge)

Please send me the CD-ROM“WTW General Catalog Water”(free of charge)

Please send me the CD-ROM“WTW Principles of MeasuringTechnique” (free of charge)

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Wissenschaftlich-TechnischeWerkstätten GmbH & Co.KG

Dr.-Karl-Slevogt-Straße 1

D-82362 Weilheim

Germany

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Wissenschaftlich-TechnischeWerkstätten GmbH & Co.KG

Dr.-Karl-Slevogt-Straße 1

D-82362 Weilheim

Germany

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Dr.-Karl-Slevogt-Straße 1

D-82362 Weilheim

Germany

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Wissenschaftlich-TechnischeWerkstätten GmbH & Co.KGDr.-Karl-Slevogt-Straße 1

D-82362 Weilheim

ANALAB, S.A.

Tel 93 237 24 41Fax 93 217 70 09E-Mail ana lab@retemai l .es

ANALAB, S.A. - c/ Betlem 12 - 08012 BARCELONA