Taylor K-1819

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DROP TEST SODIUM SULFITE (1 drop = 10 ppm)

COMPONENTS: 1 x 5203 Instruction 1 x 9198W Sample Tube, Graduated, 25 mL, plastic w/cap and white dot 1 x R-0699-C Iodide Iodate Reagent, 2 oz, DB 1 x R-0638W-C Phenolphthalein Indicator (white cap), 2 oz, DB 1 x R-0725-I Acid Starch Indicator Powder, 10 g

1. Collect water to be tested in a clean, preferably large-mouthed, bottle to overflowing. Immediately cap and cool to room temperature.
2. Rinse and fill 25 mL sample tube (#9198W) to 25 mL mark with cooled (room temperature) water to be tested. NOTE: For results in grains per gallon (gpg), fill to 14.6 mL mark.
3. Add 1 drop R-0638W Phenolphthalein Indicator. Swirl to mix. Sample should turn red.
 4. Add R-0725 Acid Starch Indicator Powder, a dipper at a time, swirling after each dipper, until color changes from red to colorless. Add 2 more dippers. Swirl until dissolved.
5. Add R-0699 Iodide Iodate Reagent dropwise, swirling and counting after each drop, until color changes from colorless to a faint but permanent blue. Always hold bottle in vertical position.
6. Multiply drops of R-0699 Iodide Iodate Reagent by 10. Record as parts per million (ppm) sodium sulfite. For 14.6 mL sample, record drops as grains per gallon (gpg) sodium sulfite.

DROP TEST CHLORIDE (1 drop = 10 ppm)


COMPONENTS: 1 x 5212 Instruction 1 x 9198 Sample Tube, Graduated, 25 mL, plastic w/cap 1 x R-0630 Chromate Indicator, DB 1 x R-0638 Phenolphthalein Indicator, DB *1 x R-0686 Sulfuric Acid N, DB *1 x R-0687 Sulfuric Acid .12N, DB 1 x R-0706 Silver Nitrate Reagent, DB *1 x R-0736 Sulfuric Acid .6N, DB.

 NOTE: When sulfite content of sample water to be tested exceeds 10 ppm, the sulfite should be oxidized to prevent interference in test. A 25 mL sample is first adjusted to the appropriate pH, then 1 mL (or 24 drops) of R-0649 3% Hydrogen Peroxide Solution (sold separately) is added and thoroughly mixed. Continue with the rest of the procedure.

1. Rinse and fill 25 mL sample tube (#9198) to 25 mL mark with water to be tested. NOTE: For results in grains per gallon (gpg), fill to 14.6 mL mark.
2. Add 2 drops R-0638 Phenolphthalein Indicator. If colorless--proceed to Step
3. If red, add R-0686 Sulfuric Acid N, R-0687 Sulfuric Acid .12N, or R-0736 Sulfuric Acid .6N dropwise, swirling after each drop, until color changes from red to colorless. 3. Add 5 drops R-0630 Chromate Indicator. Swirl to mix. Sample should turn yellow.
4. Add R-0706 Silver Nitrate Reagent dropwise, swirling and counting after each drop, until color changes from yellow to a milky salmon (brick) red. Always hold bottle in vertical position. NOTE: Do not add enough R-0706 Silver Nitrate Reagent to give a brown color. First change from yellow to a milky salmon (brick) red is the endpoint.
5. Multiply drops of R-0706 Silver Nitrate Reagent by 10. Record as parts per million (ppm) chloride. For 14.6 mL sample, record drops as grains per gallon (gpg) chloride. 5/08

DROP TEST P ALKALINITY (1 drop = 10 ppm)

COMPONENTS: 1 x 5228 Instruction 1 x 9198 Sample Tube, Graduated, 25 mL, plastic w/cap 1 x R-0638 Phenolphthalein Indicator, DB 1 x R-0687 Sulfuric Acid .12N, DB

1. Rinse and fill 25 mL sample tube (#9198) to 25 mL mark with water to be tested. NOTE: For results in grains per gallon (gpg), fill to 14.6 mL mark.
2. Add 3 drops R-0638 Phenolphthalein Indicator. Sample will turn pink if P alkalinity is present.
3. If pink, add R-0687 Sulfuric Acid .12N dropwise, swirling and counting after each drop, until color changes from pink to colorless. Always hold bottle in vertical position.
4. Multiply drops of R-0687 Sulfuric Acid N by 10. Record as parts per million (ppm) P alkalinity as calcium carbonate. For 14.6 mL sample, record drops as grains per gallon (gpg) P alkalinity as calcium carbonate.