POCKET COLORIMETER™ Analysis · PDF file4 table of contents, continued pocket...

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Hach Company, 1991–2 .S.A. te/dk 6/01 8ed
©
KET COLORAnalysis Sy

Chlorine (Cl

Instruction M

001. All rights reserved. Printed in the U

ETEem

ual

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3

TABLE OF CONTENTS

CERTIFICATION .............................................................

SAFETY PRECAUTIONS ..............................................Use of Hazard Information ..............................................Precautionary Labels .......................................................

SPECIFICATIONS ...........................................................

OPERATION ......................................................................

GENERAL DESCRIPTION ...........................................Safety Precautions ...........................................................Battery Installation ..........................................................Operation .........................................................................

CALIBRATION .................................................................User-Entered Calibration .................................................Instrument Calibration .....................................................Exiting the Calibration Routine .......................................Retrieving the Factory Calibration ..................................

ERROR MESSAGE DISPLAY ......................................Error Messages ................................................................

TA

POC URES .......... 37

CHL ....................... 39DPD ....................... 39

A ....................... 47I ....................... 47

CHL ....................... 51DPD ....................... 51

A ....................... 60I ....................... 60

CHL ....................... 65DPD ....................... 65

A ....................... 69

USI ....................... 71

GEN ....................... 73

HOW ....................... 75

REP ....................... 77

WAR ....................... 78

4

BLE OF CONTENTS, continued

KET COLORIMETER™ INSTRUMENT PROCED

ORINE, FREE ..................................................................... Method ......................................................................................

ccuracy Check ..........................................................................nterferences ...............................................................................

ORINE, TOTAL, Low Range ........................................... Method ......................................................................................

ccuracy Check ..........................................................................nterferences ...............................................................................

ORINE, TOTAL, High Range .......................................... Method ......................................................................................

ccuracy Check and Interferences .............................................

NG Spec√™ SECONDARY STANDARDS .....................

ERAL INFORMATION ....................................................

TO ORDER ........................................................................

AIR SERVICE ......................................................................

RANTY .................................................................................

y, inspected, and found the factory.

ertified as indicated to

nt for measurement, test records by Hach

charge Immunity

ro-Magnetic Field

ital Telephones

nt for measurement,

5

CERTIFICATION

Hach Company certifies this instrument was tested thoroughlto meet its published specifications when it was shipped from

The Pocket Colorimeter™ instrument has been tested and is cthe following instrumentation standards:

EMC Immunity:Per 89/336/EEC EMC: EN 61326:1998 (Electrical Equipmecontrol and laboratory use—EMC requirements). SupportingCompany, certified compliance by Hach Company.

Standard(s) include:IEC 1000-4-2: 1995 (EN 61000-4-2: 1995) Electro-Static Dis(Criteria B)IEC 1000-4-3:1995 (EN 61000-4-3: 1996) Radiated RF ElectImmunity (Criteria A)

Additional Immunity Standard(s) include:ENV 50204: 1996 Radiated Electro-Magnetic Field from Dig(Criteria A)

Radio Frequency Emissions:Per 89/336/EEC EMC: EN 61326: 1998 (Electrical Equipme

CE

contr ion limits. Supp P #0369), certified comp

AddEN 5Cana 003, Class A: Supp .S. (NVL

This dian Interference-Caus

Cet a s du Règlement sur le ma

FCC rion Technology, Intel h Company.

This subject to the follo

(1) T evice must accept any i ndesired operation.

6

RTIFICATION, continued

ol and laboratory use—EMC requirements) “Class B” emissorting test records by Criterion Technology O.A.T.S. (NVLAliance by Hach Company.

itional Radio Frequency Emissions Standard(s) include:5022 (CISPR 22), Class B emissions limits.

dian Interference-causing Equipment Regulation, IECS-orting test records by Criterion Technology, Intellistor O.A.TAP #0369), certified compliance by Hach Company.

Class A digital apparatus meets all requirements of the Canaing Equipment Regulations.

ppareil numérique de la classe A respecte toutes les exigencetériel brouilleur du Canada.

Part 15, Class “A” Limits: Supporting test records by Critelistor O.A.T.S. (NVLAP #0369), certified compliance by Hac

device complies with Part 15 of the FCC Rules. Operation iswing two conditions:

his device may not cause harmful interference, and (2) This dnterference received, including interference that may cause u

C

C the party responsible f uipment.

T mits for a Class A d ts are designed to p n the equipment is o es, uses, and can r accordance with the i munications. O se harmful i he interference at his o ence problems are a

1 emoving one of its rence.

2 ice receiving

3 e interference.

4

7

ERTIFICATION, continued

hanges or modifications to this unit not expressly approved byor compliance could void the user’s authority to operate the eq

his equipment has been tested and found to comply with the liigital device, pursuant to Part 15 of the FCC Rules. These limirovide reasonable protection against harmful interference wheperated in a commercial environment. This equipment generatadiate radio frequency energy and, if not installed and used in nstruction manual, may cause harmful interference to radio comperation of this equipment in a residential area is likely to cau

nterference, in which case the user will be required to correct twn expense. The following techniques of reducing the interferpplied easily.

. Remove power from the Pocket Colorimeter instrument by rbatteries to verify that it is or is not the source of the interfe

. Move the Pocket Colorimeter instrument away from the devthe interference.

. Reposition the receiving antenna for the device receiving th

. Try combinations of the above.

r operating this statements. Failure ge to the equipment.

paired, do not use or pecified in this manual.

(Danger, Caution, Note)

f not avoided, could result

r or moderate injury.

9

SAFETY PRECAUTIONS

Please read this entire manual before unpacking, setting up, oinstrument. Pay particular attention to all danger and caution to do so could result in serious injury to the operator or dama

To ensure the protection provided by this equipment is not iminstall this equipment in any manner other than that which is s

Use of Hazard InformationIf multiple hazards exist, this manual will use the signal word corresponding to the greatest hazard.

DANGERIndicates a potentially or imminently hazardous situation which, iin death or serious injury.

CAUTIONIndicates a potentially hazardous situation that may result in mino

NOTEInformation that requires special emphasis.

SAF

PrecPleas strument. Perso served.

T ction manual for o

10

ETY PRECAUTIONS, continued

autionary Labelse pay particular attention to labels and tags attached to the innal injury or damage to the instrument could occur if not ob

his symbol, if noted on the instrument, references the instruperational and/or safety information.

ty (noncondensing)

750 tests

11

SPECIFICATIONS

Lamp: Light emitting diode

Detector: Silicon cell

Wavelength: 528 nm

Accuracy: ± 0.02 mg/L at 25 °C

Repeatability: 0.01 mg/L

Filter bandwidth: 15 nm

Absorbance range: 0 to 1A

Dimensions: 3.2 x 6.1 x 15.2 cm (1.25 x 2.4 x 6 inches)

Weight: 0.2 Kg (0.43 lbs)

Operating conditions: 0 to 50 °C; 0 to 90% relative humidi

Sample cell pathlength: 10 and 22.35 mm

Power supply: 4 AAA alkaline batteries; approximate life is

eview the necessary es before handling

angereuse. Lire les Fiches les procédures de sécurité

eligrosa. Revise las fichas ridad antes de manipular

efahren verbunden. icheren Verfahrensweisen e entsprechenden

osa. Reveja a folha dos ntos de segurança antes

colosa. La preghiamo di zza dei Materiali e di dotto chimico.

HaMaan

Ladeav

Ladepro

DaEsunMa

A dade

Lapreab

13

OPERATIONDANGER

ndling chemical samples, standards, and reagents can be dangerous. Rterial Safety Data Sheets and become familiar with all safety procedury chemicals.

DANGER manipulation des échantillons chimiques, étalons et réactifs peut être d Données de Sécurité des Produits (FDSP) et se familiariser avec toutes ant de manipuler tous les produits chimiques.

PELIGRO manipulación de muestras químicas, estándares y reactivos puede ser pseguridad de materiales y familiarícese con los procedimientos de seguductos químicos.

GEFAHRs Arbeiten mit chemischen Proben, Standards und Reagenzien ist mit G wird dem Benutzer dieser Produkte empfohlen, sich vor der Arbeit mit sd dem richtigen Gebrauch der Chemikalien vertraut zu machen und allterialsicherheitsdatenblätter aufmerksam zu lesen.

PERIGOmanipulação de amostras, padrões e reagentes químicos pode ser perigdos de segurança do material e familiarize-se com todos os procedime manipular quaisquer produtos químicos.

PERICOLO manipolazione di campioni, standard e reattivi chimici può essere perindere conoscenza delle Schede Techniche necessarie legate alla Sicureituarsi con tutte le procedure di sicurezza prima di manipolare ogni pro

uality filter photometers is model is calibrated to ator reagent used) in l and 0 to 4.5 mg/L with isplay provides a direct n can be over-ridden

ator performs a series of

a set of batteries atures incorporated in keystrokes are made for en in the calibration ough for the s).

15

GENERAL DESCRIPTION

Hach Pocket Colorimeter™ instruments* are low-cost, high-qdesigned for single wavelength colorimetric measurement. Thmeasure free or total chlorine content (depending on the indicwater samples from 0 to 2.00 mg/L with the 1-inch sample celthe 1-cm/10-mL sample cell and adapter. The liquid crystal dreadout in milligrams per liter chlorine. The factory calibratiowith an operator-entered two-point calibration if desired.

The operator calibration will remain in memory until the operkeystrokes that will restore the factory calibration.

Power is supplied by four AAA alkaline batteries. Typically, provides approximately 750 tests because of battery-saving fethe software. The instrument will automatically shut off if no one minute when in the measurement mode or 10 minutes whmode. The colorimeter lamp is an LED and is on only long enmeasurement sequence to take place (approximately 2 second

* U.S. patents 5,083,868 and D333,992.

GE

The i L sample cells, enou hlorine tests, four AAA 7.5 x 145 cm (9 x 7 x 6 in

16

NERAL DESCRIPTION, continued

nstrument comes with 2 10-mL sample cells, two 1-cm/10-mgh DPD Reagent Powder Pillows for 100 free and 100 total c batteries and this instruction manual contained in a 22.5 x 1ch) polypropylene case.

G

F ide

PocketColorimeter

11

2

3

.......... 46700-00

.......... 52626-00

.......... 21055-49

.......... 41658-00

.......... 24276-06

.......... 21056-49

.......... 46743-00

17

ENERAL DESCRIPTION, continued

igure 1 Chlorine Pocket Colorimeter™ Packaging Gu

Poc

ket

Col

orim

eter

™

Po

ck

et

Co

lori

me

ter™

ZE

RO

RE

AD

10 mL 10 mL

CH

LO

RIN

E

mg

/L C

l

45

7

6

1. Pocket Colorimeter™ Instrument, Chlorine..........................2. Caps, Sample Cell, 1-cm/10-mL (under instrument) ...........3. DPD Free Chlorine Powder Pillows .....................................4. Sample Cells, 1-cm/10-mL ..................................................5. Sample Cells, 10-mL with caps ...........................................6. DPD Total Chlorine Powder Pillows.....................................7. Batteries, Alkaline AAA, 1.5 V, 4/pkg...................................

GE

SafeAs p th the reagents used in the ty data sheets (MSD ety glasses when hand hly if contact occu e contact Hach.

BattFigu the captive screw and r are shown on the batte nt in the holder as indic will show the softw ion.

Whe set of four. Rech charged in the in

18


ty Precautionsart of good laboratory practice, please familiarize yourself wise procedures. Read all product labels and the material safeS) before using them. It is always good practice to wear saf

ling chemicals. Follow instructions carefully. Rinse thorougrs. If you have questions about reagents or procedures, pleas

ery Installationre 2 provides an exploded view of battery installation. Loosenemove the battery compartment cover. The proper polarities ry holder. Place the four batteries provided with the instrumeated and replace the battery compartment cover. The display are version number (e.g., P 1.6) after correct battery installat

n replacing discharged batteries, always replace the completeargeable batteries are not recommended and cannot be restrument.

G

F

19


igure 2 Battery Installation

GE

OpeAll in ital display. For the norm sample solution, a simp ral procedure. Whe ailed procedure on page age 66 for high range

1. F tion (usually u mark with sample.

2. A e reagent to the cell c This is the p

3. P with the instrument c

Note ments, place the cap w the cap to match the g y light.

20


rationstrument functions are performed using two keys and the digal operation of measuring the concentration of chlorine in thele, five-step procedure is performed as follows. This is a genen measuring actual samples for chlorine, follow the more det40 for free chlorine, page 52 for low range total chlorine or p total chlorine.

ill a clean sample cell to the 10-mL mark with the blank soluntreated sample). Fill another clean sample cell to the 10-mL

dd the contents of one pillow of the appropriate DPD chlorinontaining the sample. Cap and shake the cell for 20 seconds.repared sample.

lace the blank in the cell compartment. Cover the sample cell ap as shown in Figure 3.

: When using the instrument cap as a light shield during measureith the curved surface toward the keypad. This position will allow rooves in the instrument case to provide a good seal against stra

G

4 isplay will read: 0.00.

5 the cell holder and cover ximately 2 seconds, the ms per liter (mg/L). For

N ee of liquid or fingerprints. the instrument.

F

21


. Press the ZERO key. After approximately 2 seconds, the d

. Place the sample cell containing the prepared sample into with the instrument cap. Press the READ key. After approdisplay will indicate the chlorine concentration in milligraexample: 1.15 on the display means 1.15 mg/L as Cl2.

ote: For accurate readings, make sure sample cells are wiped frAny liquid entering the sample cell compartment can damage

igure 3 Sample Cell Insertion

save you the time and s ready for use without rds on page 71 to verify

latory official or agency ill show you how to

ts. Using the factory ted.

ns. One calibration is r calibration is for the

rd solution (a sample of s to develop the color in be between 1.60 to 2.00 andard or sample must

23

CALIBRATION

The Pocket Colorimeter™ instrument is factory-calibrated toexpense required to construct your own calibration curve. It icalibration by the user. See Using Spec√™ Secondary Standaconsistent instrument operation.

The instrument also will accept a user calibration if your regurequests that you use one. The following calibration section wperform your own calibration to meet these regulatory requescalibration, however, is generally recommended when permit

User-Entered CalibrationThe instrument accepts two user-entered, two-point calibratiofor the 0 to 4.5 mg/L (high range) total chlorine test. The othe0 to 2.00 mg/L free chlorine and total chlorine tests.

To perform a user-entered calibration, make a chlorine standaknown chlorine concentration can be used). Use DPD reagentthe standard or the sample. (The chlorine concentration must mg/L Cl2.) Then the concentration of the prepared chlorine st

CA

be de trophotometer, color

By te ence between the instru ndicate the shift in res

Prep

1. S le.

2. P to a 100-mL g

3. U luted c

1 e (mL)

4. U e standard tr ed in step 3. This is calibration im e.

24

LIBRATION, continued

termined with an alternate laboratory instrument such as a specimeter, or by amperometric titration.

sting a standard before calibration, you can calculate the differment’s readings and the expected values. This difference will iults for comparable samples after the calibration is performed.

aring a Chlorine Calibration Standard Solution

nap the neck off a Chlorine Standard Solution Voluette® Ampu

ipet 2.00 mL of chlorine standard from the Voluette Ampule inraduated cylinder.

se the following formula to calculate the final volume of the dihlorine standard:

.11 x concentration of chlorine standard in Voluette ampule = final volum

sing chlorine demand-free water, dilute the 2.00 mL of chlorinansferred to the graduated cylinder to the final volume calculat the chlorine standard working solution. Use this solution for mediately—the chlorine concentration will decrease with tim

C

T of approximately 1 water and other factors, t the potential difference b ill be necessary to d standard with an a ong as the chlorine c

I

1 nsuring it is in the nge the instrument is in, ow range mode display display will show 0.1 rate the 0 to 2.00 mg/L e is used to calibrate the both the ZERO and e ZERO key and hold peat until the

25

ALIBRATION, continued

his procedure should produce a final chlorine concentration.8 mg/L Cl2. Due to possible chlorine demand in the dilutionhe concentration may actually be higher or lower. Because ofetween the theoretical and actual chlorine concentration, it wetermine the chlorine concentration of the working chlorinelternate instrument or method. You can use the standard as loncentration is between 1.60 to 2.00 mg/L Cl2.

nstrument Calibration

. Begin calibrating the Pocket Colorimeter instrument by ecorrect range you wish to calibrate. To determine which rapress the ZERO or READ key and look at the display. The lwill show 0.01 mg/L Cl2 resolution. The high range modemg/L Cl2 resolution. The low range mode is used to calibfree chlorine and total Chlorine tests. The high range mod0 to 4.5 mg/L total chlorine test. To change modes, pressREAD keys simultaneously. After one second, release ththe READ key until HI or LO appears in the display. Re

CA

in the instrument is in

2. P hem down for two s .

3. In er. Cover the s

Note le cell compartment c

4. P by 1.60.

5. F olor in 10 mL of th tandard solution.

6. U dard solution c R/2000, DR/2010, D ed into the cell h

26


strument displays the desired mode. Release the key when the correct mode.

ress both the ZERO and READ keys simultaneously and hold teconds. The display will show CAL, followed by a flashing 0

sert the blank (chlorine demand-free water) into the cell holdample cell with the instrument cap.

: Wipe all liquids off the sample cell. Any liquid entering the sampan damage the instrument.

ress the ZERO key. The instrument will display - - - followed

ollow the appropriate colorimetric procedure to develop the ce working standard solution. This is the prepared chlorine s

sing 10-mL sample cells, measure the prepared chlorine stanoncentration against a blank with a different instrument. The DR/3000 and DR/4000 will need the AccuVac® adapter insertolder to use the 10-mL round cell.

C

chlorine standard are he DPD chlorine etermination of the ine standard determined DPD for

the range of 1.60 to ther dilution of the riate amount so the

N es in the chlorine

7 e displayed 1.60 (1.6 for prepared chlorine olling. The display will ases the display by y tenths.

27


If you use amperometric titration, two aliquots of diluted necessary. Develop the color in one 10-mL aliquot using treagents. Titrate the second aliquot using amperometric dchlorine concentration. Use the concentration of the chloramperometrically along with the standard developed withinstrument calibration.

If the prepared chlorine standard concentration is outside 2.00 mg/L Cl2 (1.6 to 2.0 mg/L for high range), make anostandard. Adjust the volume of the standard by the appropdiluted chlorine standard falls within the specified range.

ote: The following steps must be done quickly to prevent changconcentration that may affect calibration accuracy.

. Press the ZERO or READ key to change (by scrolling up) thhigh range) to the concentration value determined for the standard solution. If you scroll up past the value, keep scr“wrap around” to 1.60 again. Pressing the READ key increhundredths, pressing the ZERO key increases the display b

CA

8. P m until Std a

9. F reacted chlorine s ell.

F

In over the sample c

10. P and then display th

11. T ion to determine th exit from the c instructions on p

28


ress both the ZERO and READ keys simultaneously and hold theppears in the display.

or the high range calibration only, transfer at least 1 mL of the tandard solution from the 10-mL cell to a 1-cm/10-mL sample c

or the low range calibration, use the 10-mL sample cell.

sert the reacted chlorine standard solution into the cell holder. Cell with the instrument cap.

ress the READ key. The instrument will compute the calibratione value entered for the standard.

he calibration is complete. The instrument will use this calibrate displayed concentration for future sample measurements. To

alibration routine or return to the factory calibration, follow theage 30.

C

Display

- then a number

XX for low range,X for high range

i or LO

AL, then flashing 0 - then 1.60 or 1.6

—

60 then scrolls up with ystroke

dows standard ncentration.

dC

29


Calibration Quick Reference

Step Keystroke

1. Turn power on. READ - -2. Determine if in high or low range

mode.ZERO X.

X.

3. Select desired range mode. ZERO & READhold READ

H

4. Select calibration mode. ZERO & READ C5. Place blank into cell holder. ZERO - -6. Determine standard concentration by

other means.—

7. Immediately scroll to concentration value.

ZERO or READ 1.ke

8. Enter standard concentration value. ZERO & READ St9. Place standard in cell holder.

Instrument exits calibration mode.READ Sh

co

To exit in middle of calibration mode: ZERO & READZERO & READ

StES

CA

ExitWhe it the calibration routi and hold them for two s ppear and remain displ nction of the press es the last comp user-entered calib entrations.

To ex s displayed, then press it automatically shuts

Ret

1. If bration, be sure the in retrieve. To retrieve a w range mode. See s instrument is in.

30


ing the Calibration Routinen the display flashes 0, or when Std appears in the display, exne by pressing both the ZERO and READ keys simultaneouslyeconds. The instrument exits to normal mode and ESC will aayed until ZERO or READ is pressed (this also performs the fued key) or until automatic shut-off occurs. The instrument usleted user-entered calibration or the factory calibration if no

ration has been completed to determine sample chlorine conc

it when 0 or Std are not displayed, press both keys until Std i both keys to exit. Or, let the instrument sit 10 minutes until off.

rieving the Factory Calibration

you have entered both a low and high range user-entered calistrument is in the same range mode as the range you want to

low range factory calibration, the instrument must be in the lotep 1 of Instrument Calibration to determine which mode the

C

2 d READ keys l appear in the display,

3 for two seconds. The dFL is displayed until function of the pressed

ill use the factory red samples.

31


. To retrieve the factory calibration, press both the ZERO ansimultaneously and hold them for three seconds. CAL wilfollowed by a flashing 0.

. While the display is flashing, press and hold the READ keydisplay will show dFL and the calibration mode is exited.the ZERO or READ key is pressed (which also performs thekey) or until automatic shut-off occurs. The instrument wcalibration to determine chlorine concentrations of measu

the operator, an error essage information

rrected. Resolve error ervice Centers are listed

33

ERROR MESSAGE DISPLAY

When the instrument cannot perform the function initiated bymessage will appear in the display. Refer to the appropriate mbelow to determine what the problem is and how it can be comessages in the order that they appear on the display. Hach Son page 77.

Error Messages

1. E-1 Unstable Reading

• Verify instrument cap is correctly seated.

• Check for light blockage.

• Verify LED lights up when a key is pressed.

• Contact a Hach Service Center.

2. E-2 Low Light Error


• Verify LED lights up when a key is pressed.


ER

3. E

•••

4. E

• -4.

•5. E

• -5.

•6. E

• -6.

•

34

ROR MESSAGE DISPLAY, continued

-3 Low Battery Message

Verify batteries are installed properly.

Replace batteries.

Contact a Hach Service Center.

-4 EEPROM failure

Verify low battery message (E-3) is not displayed before E


-5 EEPROM failure on zeroing function



-6 EEPROM failure on calibration



E

7

8

e instrument.

9

1

35

RROR MESSAGE DISPLAY, continued

. E-7 Improper calibration



• Verify LED lights when a key is pressed.

• Verify chlorine standard was measured after zeroing.


. Flashing 0.00 (underrange)


• Check zero by reading a blank. If error recurs, re-zero th


. Flashing 2.20 (overrange in LO range)

• Overrange - dilute and re-measure the sample.


0. Flashing 5.0 (overrange in HI range)

• Overrange - dilute and re-measure the sample.


ENT

e mode. For the 0 to ent should be in the low

e in the high (HI) range

d READ keys ontinue to hold the ese letters designate the e in samples.

37

POCKET COLORIMETER™ INSTRUMPROCEDURES

Before testing, make sure the instrument is in the correct rang2.00 mg/L free and low range total chlorine tests, the instrum(LO) range mode. The display will read to hundredths (0.00).

For the high range total chlorine test, the instrument should bmode. The display will show tenths (0.0).

To access the alternative range mode, press both the ZERO ansimultaneously. After one second, release the ZERO key and cREAD key until the letters HI or LO appears in the display. Thcalibration range the instrument will use to determine chlorin

Method 8021

or the display shows repeat the test. A slight he result by the

Wastewater.and Standard Method

39

CHLORINE, FREE (0 to 2.00 mg/L Cl2)

For water, wastewater and seawater

DPD Method* USEPA accepted for reporting**

Measuring HintsIf the sample temporarily turns yellow after reagent addition,overrange (flashing 2.20 in display), dilute a fresh sample andloss of chlorine may occur because of the dilution. Multiply tappropriate dilution factor.

* Adapted from Standard Methods for the Examination of Water and** Procedure is equivalent to USEPA method 330.5 for wastewater 4500-Cl G for drinking water.

CH

1. F10-m(the b

Note:analycannoanaly

Note:is in tpage

e the blank in the der with the d mark facing you. cover the cell with rument cap (flat uld face the back of

rument).

ipe liquid off sample

40

LORINE, FREE, continued

ill a 10-mL cell to the L line with sample lank). Cap.

Samples must be zed immediately and t be preserved for later

sis.

Be sure the instrument he low range mode. See 37.

2. Remove the instrument cap.

Note: For best results, zero the instrument and read the sample under the same lighting conditions.

3. Placcell holdiamonTightly the instside shothe inst

Note: Wcells.

C

4

Ta-

NaosRa

Fill a 10-mL cell to the mL line with sample.

41

HLORINE, FREE, continued

. Press: ZERO

he instrument will turn on nd the display will show - - then 0.00.

ote: The instrument utomatically shuts off after ne minute and the last zero is tored in memory. Press EAD to complete the nalysis.

5. Remove the cell from the cell holder.

6.10-

CH

7. ADPDPillo(the pand s20 se

Note:by un

Note:bubblsamp

cover the cell strument cap hould face the e instrument).

42


dd the contents of one Free Chlorine Powder w to the sample cell repared sample). Cap hake gently for conds.

Accuracy is not affected dissolved powder.

Shaking dissipates es that may form in les with dissolved gases.

8. Within 1 minute after adding DPD to the sample, place the prepared sample in the cell holder.

Note: A pink color will develop if chlorine is present.

Note: Wipe liquid off sample cells or damage to the instrument may occur.

9. Tightlywith the in(flat side sback of th

C

1

T-i

Nta(s

43


0. Press: READ

he instrument will show - - followed by the results n mg/L free chlorine.

ote: If the sample temporarily urns yellow after reagent ddition, or shows overrange flashing 2.20), dilute a fresh ample and repeat the test.

CH

Usin

1. Fcell tsampCollesamp


e the blank in the der, with the d mark facing you. cover the cell with rument cap (flat uld face the back of

rument).

ipe liquid off sample

44


g AccuVac® Ampuls

ill a 10-mL sample o the 10-mL line with le (the blank). Cap. ct at least 40 mL of le in a 50-mL beaker.


sis.



Note: Be sure the instrument is in the low range mode. See page 37.

3. Placcell holdiamonTightly the instside shothe inst

Note: Wcells.

C

4

Ta-

Na1zt

uickly invert the ule several times to . Wipe off any liquid or erprints.

: A pink color will form if ine is present.

: Accuracy is not affected dissolved powder.

45


. Press: ZERO

he instrument will turn on nd the display will show - - then 0.00.

ote: The instrument utomatically shuts off after minute and stores the last

ero in memory. Press READ o complete the analysis.

5. Fill a DPD Free Chlorine Reagent AccuVac Ampul with sample.

Note: Keep the tip immersed until the ampule fills completely.

6. Qampmixfing

Notechlor

Noteby un

CH

7. Wfillinplacein the

Note:AccuV

READ. The t will show - - -

by the results in e chlorine.

sample temporarily w after reagent shows overrange .20), dilute a fresh d repeat the test. A of chlorine may tiply the result by the tor.

46


ithin 1 minute after g the AccuVac Ampul, the prepared sample cell holder.

Wipe liquid off the ac Ampul.

8. Cover the ampule with the instrument cap.

9. Press instrumenfollowedmg/L fre

Note: If theturns yelloaddition or(flashing 2sample anslight lossoccur. Muldilution fac

C

A

S

® Ampule.

ndard to three 25-mL e 50-mL beakers.)

the procedure. Each chlorine, the exact

le standard. Check the lue.

4. Outside the United .

IS acidity as CaCO3 may i eutralize these s oxide. Determine the

47


ccuracy Check

tandard Additions Method

a. Snap the neck off a Chlorine Standard Solution Voluette

b. Use a TenSette® pipet to add 0.1, 0.2, and 0.3 mL of stasamples. Swirl gently to mix. (For AccuVac Ampuls, us

c. Analyze a 10-mL aliquot of each sample as described in0.1 mL of standard will cause an incremental increase invalue depends on the concentration of the Voluette ampucertificate enclosed with the Voluette ampules for this va

d. If these increases do not occur, call Hach at 800-227-422States, contact the Hach office or distributor serving you

nterferencesamples containing more the 250 mg/L alkalinity or 150 mg/L

nhibit full color development, or the color may fade instantly. Namples to pH 6–7 with 1 N Sulfuric Acid or 1 N Sodium Hydr

CH

amou nt to the sample to be te

Samp higher chlorine readi g/L mono e free chlor

Brom romium may also react

To co (Cr6+), adjust the pH to 30 g/L Potassium Iodid odium Arsenite and mix. d with DPD for both lysis to obtain the accu

DPD s contain a buffer form rdness witho

48


nt required on a separate 10-mL sample. Add the same amousted. Correct for the additional volume.

les containing monochloramine will cause a gradual drift to ngs. When read within one minute of reagent addition, 3.0 mchloramine will cause an increase of less than 0.1 mg/L in thine reading.

ine, iodine, ozone, and oxidized forms of manganese and ch and read as chlorine.

mpensate for the effects of manganese (Mn4+) or chromium 6–7 as described above. To a 25-mL sample, add 3 drops ofe Solution, mix, and wait one minute. Add 3 drops of 5 g/L SIf chromium is present, allow exactly the same reaction perioanalyses. Subtract the result of this test from the original anarate chlorine concentration.

Free Chlorine Reagent Powder Pillows and AccuVac Ampululation that withstands high levels (at least 1000 mg/L) of haut interference.

C

RD Unit Cat. No.D 00/pkg ........ 21055-69

D 25/pkg ........ 25020-25

RB ... each ............ 500-41

OC

16/pkg ........ 14268-10C

. 4/pkg ........ 26353-00D 0 tests ........ 21055-29P MDB* ............ 343-32S MDB .......... 1047-32S MDB .......... 1045-32S MDB .......... 1270-32W ..... 4 L ............ 272-56

*
49

EQUIRED REAGENTSescriptionPD Free Chlorine Reagent Powder Pillows.......................... 1orPD Free Chlorine Reagent AccuVac® Ampuls ......................

EQUIRED APPARATUS (AccuVac® Ampuls)eaker, 50 mL ............................................................................

PTIONAL REAGENTShlorine Standard Solution, Voluette® Ampules, 50-75 mg/L, 10 mL................................................................hlorine Standard, secondary, Spec√™, 0.0, 0.2, 0.8 and 1.5 mg/L .......................................................PD Free Chlorine Reagent w/dispensing cap ...................... 25otassium Iodide Solution, 30 g/L ...............................100 mL odium Arsenite Solution, 5 g/L ....................................100 mLodium Hydroxide Standard Solution, 1 N....................100 mLulfuric Acid Standard Solution, 1 N.............................100 mLater, deionized .........................................................................

Marked Dropper Bottle

CH

OPTDescr Unit Cat. No.Accu ach......... 24052-00Batte /pkg......... 46743-00Caps /pkg......... 24018-12Cylin ach........... 1081-40Cylin ach........... 2172-42sensi ach......... 51700-10Pipet ach......... 19700-01Pipet /pkg......... 21856-96Samp /pkg......... 24276-06

REPInstr ach......... 46704-00Instr ach......... 46760-88

50


IONAL APPARATUSiptionVac® Snapper Kit .................................................................. eries, AAA, alkaline.............................................................. 4 for 10-mL sample cells ..................................................... 12der, graduated, 25 mL, poly .................................................. eder, graduated, 100 mL, PMP ............................................... eon™1 Basic Portable pH Meter, with electrode.................. e, TenSette®, 0.1 to 1.0 mL ..................................................... e Tips, For 19700-01 TenSette® Pipet ................................. 50le Cells, 10-mL with screw caps......................................... 6

LACEMENT PARTSument Cap/light shield............................................................ eument Manual......................................................................... e

Method 81670 mg/L Cl2)

y)**



51

CHLORINE, TOTAL, Low Range (0 to 2.0


DPD Method* USEPA accepted (powder pillows onl

Measuring HintsIf the sample temporarily turns yellow after reagent addition overrange (flashing 2.20 in display), dilute a fresh sample andloss of chlorine may occur because of the dilution. Multiply tappropriate dilution factor.


CH

1. F10-mCap.


Note:is in tpage

t 3 minutes. During iod, proceed with 8.

pink color will form if is present.

curacy is not affected solved powder.

S MIN SECS MIN SEC

52

LORINE, TOTAL, Low Range, continued

ill a 10-mL cell to the L line with sample.


sis.

Be sure the instrument he low range mode. See 37.

2. Add the contents of one DPD Total Chlorine Powder Pillow to the sample cell (the prepared sample). Cap and gently shake for 20 seconds.

Note: Gently shaking dissipates bubbles which may form in samples containing dissolved gases.

3. Waithis persteps 4–

Note: A chlorine

Note: Acby undis

HRHR

C ued

4cs

Place the blank in the l holder, with the mond mark facing you. htly cover the cell with instrument cap (flat e should face the back of instrument).

e: Wipe liquid off sample s.

53

HLORINE, TOTAL, Low Range, contin

. Fill a 10-mL sample ell to the 10-mL line with ample (the blank). Cap.



6.celdiaTigthesidthe

Notcell

CH

7. P

The iand t- - - f

Note:autom1 minzero ito com

3 minutes after te reaction ce the prepared the cell holder.

liquid off sample

54


ress: ZERO

nstrument will turn on he display will show ollowed by 0.00.

The instrument atically shuts off after

ute and stores the last n memory. Press READ

plete the analysis.

8. Remove the cell from the cell holder.

9. Withinthe 3-minuperiod, plasample in

Note: Wipecells.

C ed

1i

55

HLORINE, TOTAL, Low Range, continu

0. Cover the cell with nstrument cap.

11. Press: READ The instrument will show - - - followed by the result in mg/L total chlorine.

Note: If the sample temporarily turns yellow after reagent addition or shows overrange (flashing 2.20), dilute a fresh sample and repeat the test. Some loss of chlorine may occur. Multiply the result by the dilution factor.

CH

Usin

1. Fcell tsampCollesamp


kly invert the several times to ipe off any liquid or ints.

pink color will develop e is present.


56


g AccuVac® Ampuls

ill a 10-mL sample o the 10-mL line with le (the blank). Cap. ct at least 40 mL of le in a 50-mL beaker.


sis.

2. Fill a DPD Total Chlorine Reagent AccuVac Ampul with sample (the prepared sample).

Note: Keep the tip immersed until the ampule fills completely.

Note: Be sure the instrument is in low range. See page 37.

3. Quicampulemix. Wfingerpr

Note: A if chlorin

Note: Acby undis

C ed

4ts

lace the blank in the holder with the ond mark facing you. tly cover the cell with nstrument cap (flat should face the back of nstrument).

: Wipe liquid off sample .

57

HLORINE, TOTAL, Low Range, continu

. Wait 3 minutes. During his period, proceed with teps 5–8.


Note: For best results, zero and read the sample measurements under the same lighting conditions.

6. Pcell diamTighthe isidethe i

Notecells

HRS MIN SECHRS MIN SEC

CH

7. P

The iand t- - - t

Note:autom1 minzero ito com

the ampule with ment cap.

58


ress: ZERO

nstrument will turn on he display will show hen 0.00.

The instrument atically shuts off after

ute and stores the last n memory. Press READ

plete the analysis.

8. Within 3 minutes after the 3-minute reaction period, place the prepared sample in the cell holder.

Note: Wipe liquid off sample cells.

9. Coverthe instru

C

1

T-i

Nta(sSot

59

HLORINE, TOTAL, Low Range, continued

0. Press: READ

he instrument will show - - followed by the result n mg/L total chlorine.

ote: If the sample temporarily urns yellow after reagent ddition or shows overrange flashing 2.20), dilute a fresh ample and repeat the test. ome loss of chlorine may ccur. Multiply the result by

he dilution factor.

CH

Acc

Stan

a Ampule.

b ard to three 25-mL 0-mL beakers.)

c e procedure. Each hlorine, the exact standard. Check the e.

d Outside the United

InteSamp L acidity as CaCO3 may y. Neutralize these samp ide. Determine the

60


uracy Check

dard Additions Method

. Snap the neck off a Chlorine Standard Solution Voluette®

. Use a TenSette® pipet to add 0.1, 0.2, and 0.3 mL of standsamples. Swirl gently to mix. (For AccuVac Ampuls, use 5

. Analyze a 10-mL aliquot of each sample as described in th0.1 mL of standard will cause an incremental increase in cvalue depends on the concentration of the Voluette ampule certificate enclosed with the Voluette ampules for this valu

. If these increases do not occur, call Hach at 800-227-4224. States, contact the Hach office or distributor serving you.

rferencesles containing more than the 250 mg/L alkalinity or 150 mg/

inhibit full color development, or the color may fade instantlles to pH 6–7 with 1 N Sulfuric Acid or 1 N Sodium Hydrox

C d

a ount to the sample to b

B hromium may also r

T m (Cr6+), adjust the p of 30 g/L Potassium I Sodium Arsenite and m riod with DPD for b nalysis to obtain the a

D puls contain a buffer f hardness w

61

HLORINE, TOTAL, Low Range, continue

mount required on a separate 10-mL sample. Add the same ame tested. Correct for the additional volume.

romine, iodine, ozone and oxidized forms of manganese and ceact and read as chlorine.

o compensate for the effects of manganese (Mn4+) or chromiuH to 6–7 as described above. To a 25-mL sample, add 3 dropsodide Solution, mix, and wait one minute. Add 3 drops of 5 g/Lix. If chromium is present, allow exactly the same reaction pe

oth analyses. Subtract the result of this test from the original accurate chlorine concentration.

PD Total Chlorine Reagent Powder Pillows and AccuVac Amormulation that withstands high levels (at least 1000 mg/L) of ithout interference.

CH

REQDescr it Cat. No.DPD kg......... 21056-69

DPD kg......... 25030-25

REQBeak ch............. 500-41

OPTChlo

Am kg......... 14268-10Chlo

0.0 et......... 26353-00DPD ts......... 21056-29Potas *............. 343-32Sodi B........... 1047-32Sodi B........... 1045-32Sulfu B........... 1270-32Wate L............. 272-56

* Ma

62


UIRED REAGENTSiption Un Total Chlorine Reagent Powder Pillows ......................... 100/p

or Total Chlorine Reagent AccuVac® Ampuls...................... 25/p

UIRED APPARATUS (AccuVac® Ampuls)er, 50 mL................................................................................ ea

IONAL REAGENTSrine Standard Solution Voluette® pules, 50-75 mg/L, 10 mL................................................ 16/p

rine Standards, secondary, Spec√™, , 0.2, 0.8, and 1.5 mg/L .........................................................4/s Total Chlorine Reagent w/dispensing cap ..................... 250 tessium Iodide Solution, 30 g/L................................100 mL MDB

um Arsenite Solution, 5 g/L ....................................100 mL MDum Hydroxide Standard Solution, 1 N ....................100 mL MDric Acid Standard Solution, 1 N .............................100 mL MDr, deionized ..............................................................................4

rked Dropper Bottle

C ued

OD Unit Cat. No.A ...... each ........ 24052-00B .... 4/pkg ........ 46743-00C .. 12/pkg ........ 24018-12C ...... each .......... 1081-40C ...... each .......... 2172-42s ...... each ........ 51700-10P ...... each ........ 19700-01P .. 50/pkg ........ 21856-96S .... 6/pkg ........ 24276-06

RI ...... each ........ 46704-00I ...... each ........ 46760-88

63

HLORINE, TOTAL, Low Range, contin

PTIONAL APPARATUSescriptionccuVac® Snapper Kit ............................................................atteries, AAA, alkaline..........................................................aps for 10-mL sample cells ...................................................ylinder, graduated, 25 mL, poly............................................ylinder, graduated, 100 mL, PMP.........................................

ension™1 Basic Portable pH Meter, with electrode ...........ipet, TenSette®, 0.1 to 1.0 mL...............................................ipet Tips, For 19700-01 TenSette®........................................ample Cells, 10-mL with screw caps.....................................

EPLACEMENT PARTSnstrument Cap/light shield .....................................................nstrument Manual...................................................................

Method 81675 mg/L Cl2)



65

CHLORINE, TOTAL, High Range (0 to 4.


DPD Method* USEPA accepted**

Measuring HintsIf the sample temporarily turns yellow after reagent addition overrange (flashing 5.0 in display), dilute a fresh sample and loss of chlorine may occur because of the dilution. Multiply tappropriate dilution factor.


CH

1. Fto thesamp


Note:is in tpage

t 3 minutes. During iod, proceed with 8.

pink color will develop e is present.


S MIN SECS MIN SEC

66

LORINE, TOTAL, High Range, continued

ill a 1-cm/10-mL cell 10-mL line with le.


sis.

Be sure the instrument he high range mode. See 37.

2. Add the contents of two DPD Total Chlorine Powder Pillows to the sample cell (the prepared sample). Cap the cell and shake gently for 20 seconds.

Note: Shaking gently dissipates bubbles which may form in samples containing dissolved gases.

3. Waithis persteps 4–

Note: A if chlorin

Note: Acby undis

HRHR

C

41t(

s: ZERO

trument will turn on display will show owed by 0.0.

gh range displays only mg/L.

e instrument cally shuts off after . If this occurs, the last tored in memory. AD to complete the

67

HLORINE, TOTAL, High Range, continued

. Fill another -cm/10-mL sample cell to he 10-mL line with sample the blank). Cap.

5. Place the blank into the cell holder, with the diamond mark facing you and the tab to the side. Tightly cover the cell with the instrument cap (flat side should face the back of the instrument).

Note: Wipe liquid off sample cells.

6. Pres

The insand the- - - foll

Note: Hito tenths

Note: Thautomati1 minutezero is sPress REanalysis.

CH

7. Wafterplacestep

Note:cells.

AD

ent will show by the results rine (Cl2).

mple temporarily fter reagent ows overrange dilute a fresh peat the test. A hlorine may the result by the

68


ithin three minutes the 3-minute period, the sample cell from

2 into the cell holder.

Wipe liquid off sample

8. Tightly cover the cell with the instrument cap (flat side should face the back of the instrument).

9. Press: RE

The instrum- - - followedin mg/L chlo

Note: If the saturns yellow aaddition or sh(flashing 5.0),sample and reslight loss of coccur. Multiplydilution factor.

C

AS

RD Unit Cat. No.D /pkg ........ 21056-69

D /pkg ........ 25030-25

RB ach ............ 500-41

OC

/pkg ........ 14268-10D tests ........ 21056-29P B* ............ 343-32S DB .......... 1047-32S DB .......... 1045-32S DB .......... 1270-32W . 4 L ............ 272-56

*
69
HLORINE, TOTAL, High Range, continued

ccuracy Check and Interferencesee page 60.

EQUIRED REAGENTSescriptionPD Total Chlorine Reagent Powder Pillows......................... 100orPD Total Chlorine Reagent AccuVac® Ampuls ..................... 25

EQUIRED APPARATUSeaker, 50 mL ............................................................................... e

PTIONAL REAGENTShlorine Standard Solution Voluette® Ampules, 50-75 mg/L, 10 mL ............................................... 16PD Free Chlorine Reagent w/dispensing cap ...................... 250 otassium Iodide Solution, 30 g/L ...............................100 mL MDodium Arsenite Solution, 5 g/L ....................................100 mL Modium Hydroxide Standard Solution, 1 N....................100 mL Mulfuric Acid Standard Solution, 1 N.............................100 mL Mater, deionized .............................................................................

Marked Dropper Bottle

CH

OPTDescr UnitCat. No.Accu ach......... 24052-00Batte /pkg......... 46743-00Caps /pkg......... 24018-12Cylin ach........... 1081-40Cylin ach........... 2172-42sensi ach......... 51700-10Pipet ach......... 19700-01Pipet /pkg......... 21856-96Samp /pkg......... 24276-06

REPCap ach......... 52626-00Instr ach......... 46704-00Instr ach......... 46760-88Samp ach......... 41658-02

70


IONAL APPARATUSiptionVac® Snapper Kit .................................................................. eries, AAA, alkaline.............................................................. 4 for 10-mL sample cells ..................................................... 12der, graduated, 25 mL, poly .................................................. eder, graduated, 100 mL, PMP ............................................... eon™1 Basic Portable pH Meter, with electrode.................. e, TenSette®, 0.1 to 1.0 mL ..................................................... e Tips, For 19700-01 TenSette®.......................................... 50le Cells, 10-mL with screw caps......................................... 6

LACEMENT PARTSfor 1-cm/10 mL sample cell ................................................... eument Cap/light shield............................................................ eument Manual......................................................................... ele Cells, 1-cm/10-mL............................................................ e

RDS

e repeatability of the e Spec√ standards are to ensure the instrument

the accuracy of the test nts is required to verify ec√ Standards should analysis lists the

LO) range mode. See

ent mark facing the

71

USING Spec√™ SECONDARY STANDA

Spec√ Secondary Standards are available to quickly check thPocket Colorimeter™ instrument. After initial readings for thcollected, the standards can be re-checked as often as desired is working consistently.

The standards do not ensure reagent quality nor do they ensureresults. Analysis of real standard solutions using the kit reagethe accuracy of the entire Pocket Colorimeter system. The SpNEVER be used to calibrate the instrument. The certificate ofexpected value and tolerance for each Spec√ Standard.

Note: Before proceeding, make sure the instrument is in the low (page 37.

Using the Spec√ Standards

1. Place the Spec√ blank into the cell holder with the alignmkeypad. Tightly cover the cell with the instrument cap.

2. Press ZERO. The display will show 0.00.

USI S, continued

3. P l with the in

4. P

5. R

6. C strument is re cord them for c

Note e Spec√ Standards will n

72

NG Spec√™ SECONDARY STANDARD

lace the STD 1 cell into the cell holder. Tightly cover the celstrument cap.

ress READ. Record the concentration reading.

epeat steps 3 and 4 with cells labeled STD 2 and STD 3.

ompare these readings with previous readings to verify the inturning consistent readings. (If these are the first readings, re

omparison with later readings.)

: If the instrument is user-calibrated, initial standard readings of theed to be read again when using the user calibration.

73

Hach Company, customer service is an ortant part of every product we make.

th that in mind, we have compiled the lowing information for your convenience.

ERAL INFORMATION

At imp

Wifol

GEN

o 80539-0389 U.S.A.ation by E-mail:

are eager to answer rders. Specialists in for you.

number

r

n or model number

75

HOW TO ORDER

By Telephone: By Mail:6:30 a.m. to 5:00 p.m. MST Hach CompanyMonday through Friday P.O. Box 389(800) 227-HACH (800-227-4224) Loveland, ColoradBy FAX: For order inform(970) 669-2932 (Hach Loveland) [email protected]

Information Required:

Technical and Customer Service (USA only)Hach Technical and Customer Service Department personnelquestions about our products and their use and to take your oanalytical methods, they are happy to put their talents to workCall 1-800-227-4224 or E-mail [email protected].

• Hach account number (if available) • Purchase order

• Billing address • Catalog numbe

• Shipping address • Brief descriptio

• Your name and phone number • Quantity

HO

InteHach o locate the repre l (970) 669-3050.

In CHachTelep

76

W TO ORDER, continued

rnational Customers maintains a worldwide network of dealers and distributors. Tsentative nearest you, send E-mail to intl@hach. com or cal

anada Sales & Service Canada Ltd., Manitoba, Canadahone: (204) 632-5589; FAX: (204) 694-5134

sending any items ur location.

ice Canada Ltd.t, Unit 34ba R3H 0X4anada only)32-559834ach.comle East, Africa:

c/ombH

rf, Germany]211.52.88.052.88.231

77

REPAIR SERVICE

Authorization must be obtained from Hach Company before for repair. Please contact the Hach Service Center serving yoIn the United States: Canada:Hach Company Hach Sales & Serv100 Dayton Avenue 1313 Border StreeAmes, Iowa 50010 Winnipeg, Manito(800) 227-4224 (USA only) (800) 665-7635 (CFAX: (515) 232-3835 Telephone: (204) 6

FAX: (204) 694-51E-mail: canada@h

Latin America, Caribbean, Africa, Europe, the MiddFar East, Indian Subcontinent: or MediterraneanHach Company World Headquarters HACH Company, P.O. Box 389 Dr. Bruno Lange GLoveland, Colorado 80539-0389 U.S.A. Willstätterstr. 11Telephone: (970) 669-3050 D-40549 DüsseldoFAX: (970) 669-2932 Telephone: +49/[0E-mail: intl@hach. com. FAX: +49/[0]211.

ship for two years

S WILL CONFORM UYER. EXCEPT AS

ES NO WARRANTY ACH EXPRESSLY OT LIMITED TO ANY R PURPOSE.

nonconforming SIVE REMEDY FOR

R ANY INCIDENTAL Y WARRANTY, .

in the United States.

the best of our

est a copy of our ice Department.

78

WARRANTYHach warrants most products against defective materials or workmanfrom the date of shipment.HACH WARRANTS TO THE ORIGINAL BUYER THAT HACH PRODUCTTO ANY EXPRESS WRITTEN WARRANTY GIVEN BY HACH TO THE BEXPRESSLY SET FORTH IN THE PRECEDING SENTENCE, HACH MAKOF ANY KIND WHATSOEVER WITH RESPECT TO ANY PRODUCTS. HDISCLAIMS ANY WARRANTIES IMPLIED BY LAW, INCLUDING BUT NWARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULA

LIMITATION OF REMEDIES: Hach shall, at its option, replace or repairproducts or refund all amounts paid by the buyer. THIS IS THE EXCLUANY BREACH OF WARRANTY.

LIMITATION OF DAMAGES: IN NO EVENT SHALL HACH BE LIABLE FOOR CONSEQUENTIAL DAMAGES OF ANY KIND FOR BREACH OF ANNEGLIGENCE, ON THE BASIS OF STRICT LIABILITY, OR OTHERWISE

This warranty applies only to Hach products purchased and delivered

Catalog descriptions, pictures and specifications, although accurate toknowledge, are not a guarantee or warranty.

For a complete description of Hach Company’s warranty policy, requTerms and Conditions of Sale for U.S. Sales from our Customer Serv

HACH COMPANYWORLD HEADQUARTERSP.O. Box 389Loveland, Colorado 80539-0389Telephone: (970) 669-3050FAX: (970) 669-2932

FOR TECHNICAL ASSISTANCE, PRICE INFORMATION AND ORDERING:Call 800-227-4224

Contact the HACH office or distributor serving you.www.hach.com [email protected]

In the U.S.A. -Outside the U.S.A. -On the Worldwide Web - ; E-mail -

toll-free

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