LaMotte DISSOLVED OXYGEN User Manual

DIS SOLVED OX Y GEN TEST KIT

WARNING! This set contains chemicals

that may be harmful if misused. Read

cautions on individual containers

carefully. Not to be used by children

except under adult supervision

CODE 5856

For determining the dissolved oxygen content of water, this test kit uses the azide modification of the Winkler Method and employs a LaMotte Direct Reading Titrator in the final titration.

QUANTITY CONTENTS CODE

30 *Manganous Sulfate Solution *4167-G 30 *Alkaline Potassium Iodide Azide *7166-G 30 *Sulfuric Acid, 1:1 *6141WT-G 60 *Sodium Thiosulfate, 0.025N *4169-H 30 Starch Indicator Solution 4170WT-G 1 Direct Reading Titrator, 0 - 10 Range 0377 1 Test Tube, 5-10-12.9-15-20-25 mL,

glass, w/cap 2 Bottles, Water Sampling, 60 mL, glass 0688-DO 1 Graduated Cylinder, 25 mL, plastic 2-2297

*WARNING: Reagents marked with an * are considered to be potential health hazards. To view or print a Material Safety Data Sheet (MSDS) for these reagents go to www.lamotte.com. To obtain a printed copy, contact LaMotte by e-mail, phone or fax.

To order individual reagents or test kit components, use the specified code number.

NOTE: A Check Standard is needed to perform an “EPA Accepted” test.

0608

DI RECT READ ING TITRATOR IN STRUC TIONS

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

BarrelPlunger Adapter tip

1. Fill the titration tube to the specified line with the water sample.

2. Add the reagents as specified in the instruction for the individual

test method.

3. Cap the tube with the special titration tube cap. Mix by swirling

gently.

4. Depress the plunger of the Titrator.

5. Insert the adapter tip into the spe cial plas tic plug in the ti trat ing

so lu tion bot tle.

6. Invert the bottle. Hold the bottle and

the Titrator firmly together. Slowly pull out the plunger until the large ring on the plunger is opposite the zero (0) line on the scale.

7. If an air bubble appears in the Titrator

barrel or the adapter tip, partially fill the barrel and pump the titration solution back into the inverted reagent bottle to expel the bubble.

NOTE: When filling the Titrator from a container without a special plug, submerge the adapter tip below the surface of the solution and pull out the plunger. Remove air bubbles.

8. Turn the bottle right side up and remove the Titrator.

9. Insert the adapter tip into the opening in the titrator tube cap.

Slowly depress the plunger to dispense the titrating solution. Gently swirl the tube to mix the solution.

10. Continue adding the titrating solution until the specified color

change occurs. If the color change does not occur when the large ring on the plunger reaches the bottom of the scale, refill the Titrator to the zero line. Continue the titration until the color change occurs.

11. Read the test result directly from the scale where the large ring on

theTitrator meets the Titrator barrel. If the Titrator was refilled to reach the final color change, add the total amounts of titrant used to determine the final test result.

12. If no ad di tional tests are to be made, dis card the re main ing ti trat ing

so lu tion in the Titrator. Do not re turn the ti trat ing so lu tion to the re agent bot tle. Thor oughly rinse the ti tra tion tube and the Titrator. Do not remove the plunger or the adapter tip from the Titrator.

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