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Aquametry Apparatus

8-1185 • 3/28/00 Serial Number ______________________________________

BARNSTEAD|THERMOLYNE CORPORATION

OPERATION MANUAL

AND PARTS LIST

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IF THERE IS BREAKAGE, DO NOT discard the packaging.

Contact your supplier. Supplier should initiate any claim for damages.Barnstead|Thermolyne cannot be held responsible for damages to shipments not shippeddirectly from Barnstead|Thermolyne.

FOLLOW INSTRUCTIONS BELOW ONLY IF THE SHIPPER IS Barnstead|Thermolyne.

UPS (UNITED PARCEL SERVICE), TRUCK LINE, RAIL, OR AIR FREIGHT SHIPMENTS

1. LEAVE instrument in the same shipping carton in which it was received. HOLD it in yourreceiving department.

2. CONTACT the delivering carrier to report the damage. Request the carrier to inspect thedamage and to return the shipment to Barnstead|Thermolyne. The packing list should bereturned with the shipment.

3. DO NOT RETURN the shipment yourself. Claims are invalid without an inspection by thecarrier.

4. A REPLACEMENT will be shipped as soon as we receive the damaged instrument andthe claim. For an immediate replacement, contact Barnstead|Thermolyne.

PARCEL POST SHIPMENTS

1. FILE a claim with your Post Office for “partly damaged” goods only. The Post Office willforward the instrument and the claim to Barnstead|Thermolyne.

2. NOTIFY Barnstead|Thermolyne by telephone or mail.

3. A REPLACEMENT will be shipped as soon as we receive the damaged instrument andthe claim. For an immediate replacement, contact Barnstead|Thermolyne.

NOTE: BARNSTEAD|THERMOLYNE CANNOT BE HELD RESPONSIBLE FORDAMAGES IN SHIPMENT, IF THESE INSTRUCTIONS ARE NOT FOLLOWED. For furtherinformation call toll free (800) 227-0128 in U.S.A.

ImportantCheck shipment for breakage!

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Table of Contents

Check Shipment for Breakage ........................................................................................................................... 2Table of Contents ............................................................................................................................................... 3Introduction ........................................................................................................................................................ 4

Important Information .................................................................................................................................. 4Introduction .................................................................................................................................................. 4Water Determinations by the Karl Fischer (Aquametry) Method Dead-Stop Technique .............................. 4General Usage ............................................................................................................................................ 5

Safety Information .............................................................................................................................................. 6Unpackaging ...................................................................................................................................................... 7

Contents of Pagkage ................................................................................................................................... 7Breakage in Shipment ................................................................................................................................. 7

Specifications ..................................................................................................................................................... 8Accuracy ...................................................................................................................................................... 8Reproducibility ............................................................................................................................................. 8Moisture Determination ............................................................................................................................... 8Environmental Conditions ............................................................................................................................ 8

Installation .......................................................................................................................................................... 9Assembly, Aquametry I Apparatus ............................................................................................................... 9Assembly, Aquametry II Apparatus ............................................................................................................ 11Checking Assembly ................................................................................................................................... 12Checking the Aquametry Meter-Electrode for Proper Performance .......................................................... 13

Operation ......................................................................................................................................................... 15Karl Fischer Aquametry Dead-Stop Technique.......................................................................................... 15Achieving Highest Precision ...................................................................................................................... 18

Adding the Sample .............................................................................................................................. 18Titrating ............................................................................................................................................... 19

Troubleshooting ................................................................................................................................................ 20Special Problems ....................................................................................................................................... 21

Pretreatment of Materials .................................................................................................................... 21Suitable Solvent .................................................................................................................................. 21Heating to Release Water ................................................................................................................... 21

Maintenance..................................................................................................................................................... 22Aquametry Meter-Electrode....................................................................................................................... 22Battery ....................................................................................................................................................... 22Karl Fischer Reagent ................................................................................................................................. 22General Cleaning Instructions ................................................................................................................... 22

Parts List .......................................................................................................................................................... 23Views ................................................................................................................................................................ 26

Aquametry I Apparatus .............................................................................................................................. 26Aquametry II Apparatus ............................................................................................................................. 27

Ordering Procedures ........................................................................................................................................ 28Warranty ........................................................................................................................................................... 31

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Introduction

Congratulations on your purchase of aLabindustries Aquametry Apparatus.

Important InformationThis manual contains important operating andsafety information. You must carefully read andunderstand the contents of this manual prior tousing this equipment.

IntroductionThe unit is designed to do a number of jobs withinyour laboratory. Please read the instructionscarefully to ensure that you receive maximumbenefit from it. Also, be sure to fill out and returnthe enclosed warranty registration card. Wewould like to receive the information requested,and it will help us assure you of proper warrantycoverage.

Water Determinations by the Karl

Fischer (Aquametry) Method

Dead-Stop TechniqueKarl Fischer Reagent (KFR) consists of a mixtureof pyridine, iodine, sulfur dioxide and methanol.KFR reacts with water on an exact volume-for-volume ratio. In an excess of KFR, the reactionchanges from yellow to dark brown because ofthe presence of free iodine. In the presence offree iodine, the conductivity of the solutionincreases dramatically. In an excess of water, thereaction changes from dark brown to yellowindicating the absence of free iodine. In theabsence of free iodine, the conductivity of thesolution decreases.

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The dead-stop aquametry technique is a rapidmethod of water determination which does notrequire a back titration with water. The solventis first titrated with KFR to the KF end point toeliminate all of the water from the system. Asample containing water is added to thesolvent/KFR mixture in the reaction vessel. Themixture is then titrated with KFR to bring themixture back to the KF end point. The volumeof titrant used is proportional to the amount ofwater in the sample.

The Labindustries Aquametry Apparatus is aclosed, odorless, moisture-proof system for thedetermination of water by titration with KFR.The Labindustries Meter-Electrode is a self-powered conductivity meter which preciselyindicates the water and KF end points.

KFR Titre: mg (µl) H20

F = ml KFR

Mass (volume) of water in sample: mg (µl) H20 = A x F

Percent water in sample: A x F x 0.1

% H20 = S

Where:A = Milliliters of KFR required for sample

titrationF = Water equivalence of KFRS = Grams of sample

General UsageDo not use this product for anything other thanits intended usage.

INTRODUCTION

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Safety Information

Your Labindustries Aquametry Apparatus hasbeen designed with function, reliability, and safetyin mind. It is your responsibility to install it inconformance with local electrical codes. For safeoperation, please pay attention to the alert boxesthroughout the manual.

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Remove components from the shipping cartonsvery carefully, examining them for breakage,defects or shortages. Do not discard packagingif breakage is found.

Contents of PackageExamine the contents of the shipping cartoncarefully. Each package includes the following:

Aquametry I1 Meter-Electrode1 Dual micro/macro Pyrex

® glass buret

with 3-way stopcock and clamp1 Glass adapter and filling device3 6 oz. reaction vessels3 Calcium Sulfate drying tubes1 110 volt stirrer and stirring bar1 Lab stand and 2 clamps1 Teflon

® tip

1 15 µl Fixed Volume Micropipettor

Aquametry II1 Meter Electrode1 Zero-adjusting buret with 2-way glass

stopcock1 Fluorocarbon adapter1 Filling device3 Calcium Sulfate drying tubes1 110 volt stirrer and stirring bar1 Teflon tip1 6 oz. reaction vessel1 Lab stand and 2 clamps

Breakage in ShipmentNotify your supplier at once if you findbreakage, defects, or shortages upon openingpackages. DO NOT RETURN INSTRUMENTSUNTIL INSTRUCTED BY YOUR SUPPLIER.

Unpackaging

PYREX® is a registered trademark of Corning Inc.TEFLON® is a registered trademark of Dupont.

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Accuracy1% of full scale volume

Reproducibility0.5% of full scale volume

Moisture DeterminationRanges from 5 ppm to 100% water

Environmental ConditionsOperating: 17°C - 27°C; 20% - 80% relative

humidity, non-condensing. InstallationCategory II (over-voltage) in accordancewith IEC 664. Pollution Degree 2 inaccordance with IEC 664.Altitude limit: 2,000 meters.

Storage: -25°C - 65°C; 10% - 85% relativehumidity.

Specifications

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Assembly, Aquametry IApparatusThe Aquametry I Apparatus, Catalog No.13216, is supplied with the following:

Aquametry Meter-Electrode. This five-ounce,self-powered, tiny conductance meter, sensitiveto three micrograms of water, has a plug-inplatinum electrode. The face of the 1-1/2-inchsquare meter has a yellow area to indicate thewater end point and a brown area to indicatethe KFR end point. The heavy platinum ballelectrode tips are protected by glass. A doubleplatinum-to-glass seal eliminates leakage ofreagent into the electrode.

The Meter-Electrode is a complete instrumentin itself. It is available separately to yourspecifications for those who already have atitration apparatus but who wish to achievehigher precision.

Dual Buret. The Labindustries Dual Buretconsists of a one ml buret with 0.01 ml divisionsjoined to a 25 ml buret with 0.1 ml divisions. Atthe base of the dual buret is a 3-way stopcock.Either one or both burets may be used in adetermination and the unused KFR returned tothe bottle.

Adapter. There are two 10/18 joints in the topof the adapter and one 13/18 sample port.One accepts the Dual Buret, another the Meter-Electrode. The third is recessed and is used forthe introduction of sample. It is kept closed witha ground glass stopper during titration.

Three jars.

Installation

TsTs

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Filling Device. Transfer of KFR from stock bottleto buret is made through a Teflon connector withdry air under pressure generated by squeezing arubber bulb. The Filling Device is furnished withfive sets of caps and washers (28-400, 28-430,33-400, 33-430 and 38-430) for fitting mostbottles of KFR available on the market.

Three Drying Tubes. BE CERTAIN TOREMOVE PLUGS FROM BOTH ENDS OF THEDRYING TUBES OR THE INSTRUMENT WILLNOT WORK.

The Aquametry I Apparatus, Catalog No. 13226,is the same as Catalog No. 13216, but includes inaddition:

Magnetic Stirrer, 110 VAC or 220 VAC, with aTEFLON-coated stirring bar.

Lab Stand.

Two Clamps.

Micropipettor.

NoteBe certain to remove plugsfrom both ends of the dryingtubes or the instrument willnot work.

INSTALLATION

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Assembly, Aquametry IIApparatusThe Aquametry II Apparatus is supplied withthe following:

Aquametry II Meter-Electrode. This five-ounce, self-powered, tiny conductance meter,sensitive to three micrograms of water, has aplug-in platinum electrode. The face of the1-1/2-inch square meter has a yellow area toindicate the water end point and a brown areato indicate the KFR end point. The heavyplatinum ball electrode tips are protected byglass. A double platinum-to-glass seal,developed by Labindustries, eliminates leakageof reagent into the electrode.

The Meter-Electrode is a complete instrumentin itself. It is available separately to yourspecifications for those who already have atitration apparatus but who wish to achievehigher precision.

Self-Zeroing Buret. The LabindustriesSelf-Zeroing Buret consists of one 25 ml buretwith 0.1 ml divisions. The buret automaticallyzeroes itself upon filling by returning anyexcess KFR to the bottle.

Adapter. There are three ports in the top ofthe adapter and one air vent. One port acceptsthe Self-Zeroing Buret, one theMeter-Electrode, and one the sample to betitrated. The sample port is kept closed with aground glass stopper during titration.

One jar.

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INSTALLATION

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Filling Device. Transfer of KFR from stock bottleto buret is made through a TEFLON connectorwith dry air under pressure generated bysqueezing a rubber bulb. The Filling Device isfurnished with five sets of caps and washers(28-400, 28-430, 33-400, 33-430 and 38-430) forfitting most bottles of KFR available on themarket.

Three Drying Tubes. BE CERTAIN TOREMOVE PLUGS FROM BOTH ENDS OF THEDRYING TUBES OR THE INSTRUMENT WILLNOT WORK.

Magnetic Stirrer, 110 VAC or 220 VAC, with aTEFLON-coated stirring bar.

Lab Stand.

One Clamp.

Checking AssemblyAfter assembly is completed and before checkingfor airtightness, allow the Aquametry Apparatus tostand for a few hours with KFR in the reactionvessel. This will dry out the moisture in theinstrument itself. Check for airtightness. Removethe plug from the drying tube at the top of theburet. For this check, be certain that the plug is inthe drying tube which is attached to the reactionvessel.

INSTALLATION

NoteBe certain to remove plugsfrom both ends of the dryingtubes or the instrument willnot work.

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Pump KFR into the buret with the stop cock inthe closed position. Turn the buret stopcock tolet the KFR into the reaction vessel. Thereagent should soon stop flowing, assuring youthat the reaction vessel is properly sealed andairtight. Now remove the plug from the dryingtube which is attached to the reaction vessel.KFR should flow into the vessel.

The above check for airtightness is necessary,because, should the apparatus not be airtight,ordinary moist air in the reaction vessel mightrequire as much as 0.1 ml to react with themoisture before an accurate determination canbe made.

Checking the Aquametry Meter-Electrode for ProperPerformanceRefer to the views of Aquametry I Apparatus(page 26) and Aquametry II Apparatus (page27) in this manual.

1. Remove the Meter-Electrode from theapparatus and gently wipe dry the endwith the platinum balls.

2. The meter should read close to zero. If itis off more than a division from zero,readjust closer to zero by turning thezero set — the small, clear plastic,slotted screw head in the transparentplastic face of the meter. The number ofdivisions the zero set can be adjusted islimited to one or two.

INSTALLATION

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3. Touch a metal paper clip across theplatinum balls on the electrode. The metershould read full scale 5, but the needlemust not go beyond 5. Use the full scalelocking adjustment in the rear of theMeter-Electrode to position the needle at 5while the platinum tips are shorted with thepaper clip. If the meter needle reads 5when the electrode is shorted, theinstrument is OK.

If when shorting the platinum balls, theneedle reads less than 5, and the full scalelocking adjustment cannot quite bring theneedle to 5, the battery, RM-IR, should bereplaced.

If the meter needle reads zero when theballs are shorted, remove the electrode byunscrewing the electrode sleeve andpulling the electrode out of its socket.Open the paper clip and short the electrodesocket in the meter with the ends of thepaper clip. If the meter now reads 5, themeter is OK, but the electrode is defectiveand should be returned toBarnstead|Thermolyne for repair.

INSTALLATION

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Karl Fischer AquametryDead-Stop TechniqueThe “dead-stop” technique described below isrecommended by Barnstead|Thermolyne as anaccurate, far more rapid and simpler method forwater determinations than others requiring backtitration with water.

1. Place the TEFLON-coated stirring bar inthe reaction vessel.

2. Screw the adapter assembly in place.

3. Add approximately 50 ml of the selectedsolvent to the reaction vessel throughthe sample port.

4. Turn on the magnetic stirrer.

5. Aquametry I — Turn the buret stopcockto the filling position. Hold one finger onthe air-release hole in the rubber bulband pump the bulb to fill the buret. Closethe stopcock when the Karl FischerReagent reaches the desired level in theburet.

5a. Aquametry II — Turn the buret stopcockto the closed position. Hold one finger onthe air-release hole in the rubber bulband pump the bulb to free the buret.Fill the buret past the self-zeroing pointand remove finger from the air-releasehole. This will return the excess KFR tothe bottle.

Operation

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6. Remove the water in the solvent byadding enough KFR to just turn thesolution color from yellowto dark brown. This is known as the KFend point. Note and record themeter indication on the AquametryMeter-Electrode conductance meter.You may titrate to any point in the brownKF zone, provided that youalways titrate to that same end point inall subsequent samplings in the series.Allow the solution to stabilize at endpoint for at least one minute beforeproceeding to the next step.

7. Standardize the water equivalence of theKFR. Normally, this needs to be done onlyonce a day or when changing the KFRsupply.

a. Into the reaction vessel, still at theend point, pipet a weighed oraccurately measured volume ofpure water, usually 15 mg (15 µl),through the sample port. Forgreatest accuracy, weigh the pipetbefore and after dispensing todetermine the exact weightdispensed.

b. Titrate the water to the same endpoint as in Step 6 (1 ml of fresh KFRequivalent to approximately 5 mg(µl) water).

c. Compute the KFR waterequivalence, F. F = mg (µl) wateradded per ml KFR to return tothe KF end point (meterreading before the water wasadded).

OPERATION

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8. To the reaction vessel, still at the endpoint, add a weighed amount of yoursample which is of sufficient size tocontain 20 to 50 mg (µl) water. Asufficiency of water is indicated by thesolution color change to light yellowand/or the meter registering below theKF zone.

9. Titrate the water as in Step 6 to theoriginal end point.

10. CALCULATION: Calculate the watercontent of the sample as follows:

(A x F x 0.1)Water, percent=

Swhere:A = Milliliters of KFR required for titration

of sampleF = Water equivalence of KFR as

determined in Step 7(expressed in mg (µl) of water perml of KFR) and

S = Grams of sample

Re Aquant®, a proprietary product of J.T.

Baker Company, may be used instead ofKFR. It has the advantage of having nodisagreeable odor by the disadvantageof requiring two solutions. The secondsolution contains the sulfur component,and enough of the second solution mustbe used to provide adequate bufferingcapacity, i.e. 1 ml for each 5 mg (µl) ofwater in the sample.

OPERATION

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Achieving Highest Precisionand Efficiency

Adding the SampleA liquid may be introduced into the reactionvessel through the sample port by removing thepenny head stopper. Be certain to keep theopening closed securely at all times when it isnot in use.

A powdered sample may be introduced into thevessel by unscrewing the vessel from theadapter, exposing the conveniently largeopening of the jar. Add the sample to thesolution and rapidly screw the jar back into theadapter to avoid the entrance of moisture intothe apparatus. Powdered samples may also beadded by dissolving them in solvent andintroducing them through the sample port in theadapter.When working with several parts per million ofwater, one cannot expose the solution withoutadding several micrograms of moisture fromthe air. For such required sensitivity, the jarmust not be opened. Replace the stopper of thesample port in the adapter with a rubbercapsule cover and add the sample or standardusing a syringe and attached needle. An easilyavailable capsule cover is the stopper in anyblood collecting tube.

OPERATION

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TitratingAdd solvent to the reaction vessel until the solventtouches the platinum balls of the AquametryMeter-Electrode while the magnetic stirring bar isrotating steadily beneath the electrode. (Irregularstirring will cause erratic indication of the endpoint.) Add KFR until the KFR end point isreached. Add more KFR in a few minutes if theend point is not held. When the true end point isreached, it will hold for hours. To titrate anothersample, refill the buret to the zero line.

When titrating, either the reaction must be stirredor the electrode gently moved to removepolarization products. The Labindustries meter isalways ready to operate. No switch is required.

Add KFR slowly to prevent errors caused by rapidheating of the reaction. Keep the stirrer motorrunning at a constant speed. A change in stirrerspeed may shift the end point. Titrate to the samenumber of the meter dial, e.g. 44, and allow themeter to indicate that number for at least 15seconds before considering the titrationcompleted. If the meter indication drops back tothe excess water side of the end point, the sampleshould be left in the jar for a longer period beforetitrating. A shifting end point may indicate that theapparatus is not quite dry. Letting the apparatusstand with KFR in the jar will dry it out, since KFRis a very effective desiccant. A shifting end pointmight also indicate an interference with asubstance other than water. Sometimes coolingthe reaction vessel will eliminate the shifting endpoint.

OPERATION

NoteFOR AQUAMETRY IAPPARATUS OWNERS:During a titration, if the dualburet has been filled to thezero line of the 1 ml buretand more than 1 ml isrequired, close the stopcockwhen the Karl FischerReagent reaches the 1 mlcalibration line. Turn thestopcock to empty the KarlFischer Reagent back into itsbottle, lowering the of level ofKarl Fischer Reagent in theburet to the zero line of the25 ml buret. Resume thetitration, using the finalreading of the 25 ml buretplus 1 ml for the value of A inthe calculations. Thus, eitherthe micro or the standardburet may be chosen withoutsacrificing the airtightintegrity of the apparatus,extending the high precisionand speed of thedetermination throughout theentire range of theinstrument.

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Troubleshooting

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Special Problems

Pretreatment of MaterialsAlthough water in most materials may betitrated with KFR without difficulty, somematerials react with KFR and require somepretreatment to permit an accurate waterdetermination. Some of these substanceswhich require pretreatment are metalhydroxides and oxides, carbonates andbicarbonates, strong oxidants and reductants,boric acid, some metallic chlorides, ammonia,hydrogen sulfide and sodium sulfide. Tominimize side reactions, dilute the KFR to atitre of 1 or 2 mg (µl) per cc. Methyl cellosolveand methanol are suitable diluents, dependingupon the brand of KFR used.

Suitable SolventAlthough methanol is the most widely usedsolvent in aquametry, some materials will notdissolve in methanol and release the water toreact with KFR. Select a solvent in which thematerial is soluble. We suggest methylenechloride for petroleum products, dimethylformamide for biologicals, tetrahydrofuran forplastics, dioxane for bicarbonates.

Heating to Release WaterSometimes moisture may be released withdifficulty and heating is required to speed upthe release of water.

TROUBLESHOOTING

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Aquametry Meter-ElectrodeAfter every 500 hours of use, wash the platinumballs in hydrochloric acid to increase the electrodesensitivity.

Check the Meter-Electrode for properperformance. See page 13.

BatteryThe Mallory RM-IR battery in the AquametryMeter-Electrode should last for one year withordinary usage. The back may be removed toexpose this battery for replacement by removingthe two sheet metal screws that secure it inposition.

Karl Fischer ReagentKFR deteriorates with time. When measuring thetitre of the KFR, observe the mixture. Thereshould be no precipitate. If a yellow powderyprecipitate or a very fine black precipitate forms,do not use the reagent. To remove the precipitateleft on the glassware, rinse with methanol.Occasionally a few deposits of yellow will flakeout of the KFR and deposit on the walls of theburet. When excessive, rinse out the buret withmethanol.

General Cleaning InstructionsWipe exterior surfaces with a dampened clothcontaining a mild soap solution.

Maintenance

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Micropipettor

Aquametry I Aquametry IICatalog No. Catalog No. DescriptionMP15H — 15 µl micropipettor, fixed volume

Burets

Aquametry I Aquametry IICatalog No. Catalog No. Description1125L — Burets, dual, 1 and 25 ml, with ball joint

and clamp, 3-way stopcock.1125A — Lower half of dual buret, 25 ml, with

stopcock.1125B — Upper half of dual buret, 1 ml.1125C — Clamp for dual buret.1125G — 3-way glass stopcock plug.1125T — 3-way TEFLON stopcock plug.1125R 1135R Stopcock plug retainer.11266 11266 TEFLON tip with lock nut buret.1130 1130 Lab Clamp— 1135 Buret, single, 25 ml, zero-adjusting with

2-way stopcock.— 1135G Glass #2 stopcock plug.

Aquametry Meter-Electrode

Aquametry I Aquametry IICatalog No. Catalog No. Description1002A6 — Meter assembly with straight electrode.13326 — Electrode only (straight).— 1003-6 Meter assembly with bent electrode.— 13336 Electrode only (bent).1131 1131 Meter only.1328 1328 Meter Battery.

Parts List

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Vessels

Aquametry I Aquametry IICatalog No. Catalog No. Description11626 11626 Jars, 6 oz., with caps, 63-400. Case of 24.1162S6 1162S6 Jar, 6 oz., with cap, 63-400. Single.

Adapter

Aquametry I Aquametry IICatalog No. Catalog No. Description— 1145 HALAR

® adapter, only, with three

openings and tubulation for drying tube.1158 — TEFLON screw cap, 63-400, and gasket.1158A — TEFLON screw cap, 63-400 only.1159 — PYREX glass adapter, only, with two

integral 10/18 joints and one 12/18joint.

11606 — Adapter kit: Glass adapter, cap andgaskets, three 6 oz. jars, and twoclosed-jar lids.

1159P 1159P Stopper, pennyhead.1161 — TEFLON gasket.1161S 1161S Silicone gasket.

Ts Ts

PARTS LIST

HALAR® is a registered trademark of AUSIMONT U.S.A. Inc.

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Filling Device and Connectors

Aquametry I Aquametry IICatalog No. Catalog No. Description1165 — Filling device kit: Davol bulb, drying

tube, 12” inlet tube, 12” connector tube,two clamps, filling device and cap set.

— 11652 Filling device kit: Davol bulb, dryingtube, 12” inlet tube, 18” connector tube,two clamps, filling device and cap set.

1165A 1165A Filling device, 12” inlet tube and cap set.1127 1127 Davol bulb.1128 — 12” connector tube and two clamps.— 11282 18” connector tube and two clamps.131 131 Clamp, nickel plated for 5 mm tube.

Air Moisture Absorbers

Aquametry I Aquametry IICatalog No. Catalog No. Description1140 1140 Labindustries calcium sulfate drying

tube.

Stirrer

Aquametry I Aquametry IICatalog No. Catalog No. Description1269 1269 Synchrostir Magnetic Stirrer, 110 VAC.1270 1270 Synchrostir Magnetic Stirrer, 220 VAC.1271 1271 AC/DC Magnetic stirrer.ZSX122A ZSX122A TEFLON-coated stirring bar.

Lab Stand

Aquametry I Aquametry IICatalog No. Catalog No. Description1166 1166 Lab stand, extra large base.

PARTS LIST

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Views

Aquametry I Apparatus

Upper Half ofDual Buret, 1ml

SamplePort

Clamp

Lower Half ofDual Buret, 25ml

Meter Assembly

Cap Assembly

Glass Adapter

Drying Tube

Stirring Bar Magnetic Stirrer

DryingTube

Lab Stand

Lab Clamp (2 required)

Connector Tubeand Clips

Filling Device

Platinum Ball Electrode Tips

10/18 jointTs

Zero Set Meter

Full ScaleLockingAdjustment

Aquametry I Meter-Electrode

Karl Fischer Reagent

Drying Tube

Davol Bulb with hole

Micropipettor

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VIEWS

Aquametry II Meter-Electrode

Aquametry II Apparatus

Self-ZeroingBuret

Lab Clamp

Meter-Electrode

Drying Tube

Stirring BarMagnetic Stirrer

Karl FischerReagent

Davol Bulb

Drying Tube

Filling Device

Connector Tubeand Clips

Lab Stand

Drying Tube

Zero Set Meter

Full ScaleLockingAdjustment

Platinum BallElectrode Tips

10/18 jointTs

SamplePort

Adapter

Jar

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Ordering Procedures

Please refer to the Specification Plate for the complete model number, serial number, andseries number when requesting service, replacement parts or in any correspondenceconcerning this unit.

All parts listed herein may be ordered from the Barnstead|Thermolyne dealer fromwhom you purchased this unit or can be obtained promptly from the factory. When service orreplacement parts are needed we ask that you check first with your dealer. If the dealercannot handle your request, then contact our Customer Service Department at 319-556-2241 or 800-553-0039.

Prior to returning any materials to Barnstead|Thermolyne Corp ., please contact ourCustomer Service Department for a “Return Goods Authorization” number (RGA). Materialreturned without a RGA number will be refused.

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Barnstead|Thermolyne Corporation warrants that if a product manufactured by Barnstead|Thermolyne andsold by it within the continental United States or Canada proves to be defective in material or construction, itwill provide you, without charge, for a period of ninety (90) days, the labor, and a period of one (1) year, theparts, necessary to remedy any such defect. Outside the continental United States and Canada, the warrantyprovides, for one (1) year, the parts necessary to remedy any such defect. The warranty period shallcommence either six (6) months following the date the product is sold by Barnstead|Thermolyne or on thedate it is purchased by the original retail consumer, whichever date occurs first.

All warranty inspections and repairs must be performed by and parts obtained from an authorizedBarnstead|Thermolyne dealer or Barnstead|Thermolyne (at its own discretion). Heating elements, however,because of their susceptibility to overheating and contamination, must be returned to our factory, and if, uponinspection, it is concluded that failure is not due to excessive high temperature or contamination, warrantyreplacement will be provided by Barnstead|Thermolyne . The name of the authorized Barnstead|Thermolynedealer nearest you may be obtained by calling 1-800-446-6060 (319-556-2241) or writing to:

Barnstead|ThermolyneP.O. Box 797

2555 Kerper BoulevardDubuque, IA 52004-0797

USAFAX: (319) 589-0516

E-MAIL ADDRESS: mkt@barnstead.com

Barnstead|Thermolyne’s sole obligation with respect to its product shall be to repair or (at its own discretion)replace the product. Under no circumstances shall it be liable for incidental or consequential damage.

THE WARRANTY STATED HEREIN IS THE SOLE WARRANTY APPLICABLE TO Barnstead|ThermolynePRODUCTS. Barnstead|Thermolyne EXPRESSLY DISCLAIMS ANY AND ALL OTHER WARRANTIES,EXPRESSED OR IMPLIED, INCLUDING WARRANTIES OF MERCHANTABILITY OR FITNESS FOR USE.

One Year Limited Warranty

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9001ISOREGISTERED

Barnstead|Thermolyne2555 Kerper Blvd.P.O. Box 797Dubuque, IA 52004-2241Phone: 319-556-2241 800-553-0039Fax: 319-589-0516E-Mail Address: mkt@barnstead.com