LaMotte AG-104 Salt Water Aquarium - Manual (Page 7)

DISSOLVED OXYGEN
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.
QUAN TITY CON TENTS CODE
30 mL *Manganous Sulfate Solution *4167-G
30 mL *Alkaline Potassium Iodide Azide Solution *7166-G
30 mL *Sulfuric Acid, 1:1 *6141WT-G
60 mL *Sodium Thiosulfate Solution (0.025N) *4169-H
30 mL Starch Indicator 4170WT-G
1 Direct Reading Titrator, 0-10 Range 0377
1 Test Tube, 5-10-12.9-15-20-25 mL, w/cap 0608
1 Bottle, Water Sampling, 60 mL, glass 0688-DO
*WARNING: Reagents marked with a * are considered to be potential health hazards.
To view or print a Material Safety Data Sheet (MSDS) for these reagents see MSDS
CD or www.lamotte.com. To obtain a printed copy, contact LaMotte by email, phone
or fax.
NOTE: Carefully read the instruction manual for the LaMotte Direct
Reading Titrator before performing the test procedure. The Titrator is
calibrated in parts per million (ppm) Dissolved Oxygen.
Col lec tion & Treat ment of the Wa ter Sam ple
Steps 1 through 4 below describe proper sampling technique in shallow
water. For collection of sample at depths beyond arm’s reach, special
water sampling apparatus is required (e.g., the LaMotte Water
Sampling Chamber, Code 1060; Model JT-1 Water Sampler, Code
1077; or Water Sampling Outfit, Code 3103).
1. To avoid contamination, rinse the Water Sampling Bottle
(0688-DO) thoroughly with sample water.
2. Tightly cap the bottle. Submerge to the desired depth, and remove
the cap to allow the bottle to fill.
3. Tap the sides of the submerged bottle to dislodge any air bubbles
clinging to the inside of the bottle. Replace the cap while the bottle
is still submerged.
4. Retrieve the bottle. Examine it carefully to make sure that no air
bubbles are trapped inside of the bottle. Once a satisfactory sample
has been collected, proceed immediately with Steps 5 and 6 to “fix”
the sample.
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