LaMotte 7191-01-FMC User Manual

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PERACETIC ACID TEST

KIT

CODE 7191-01

QUANTITY CONTENTS CODE

30 mL *Sulfuric Acid, 1:1 *6141WT-G
15 mL Ferroin Indicator 6410-E
2 x 30 mL *Hydrogen Peroxide Titrant *5650LWT-G
30 mL *Potassium Iodide 20% Solution *6521-G
60 mL Peracetic Acid Titrant S-6155-H
1 Test Tube, 5-10-25 mL, plastic, w/cap 0715
1 Pipet, 0.5 mL, plastic 0353

*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: Do not use for tapwater or less than 20 ppm peracetic acid.

PRO CE DURE

HYDROGEN PEROXIDE

1. Fill test tube (0715) to 10 mL line with sample water.

2. Add 10 drops of *Sulfuric Acid, 1:1 (6141WT). Swirl to mix. Make sure

solution is thoroughly mixed.

3. Add 1 drop of Ferroin Indicator (6410). Swirl to mix. Make sure solution is

thoroughly mixed. Solution will turn pale orange-pink if hydrogen
peroxide is present.

4. While gently swirling tube, add *Hydrogen Peroxide Titrant (5650LWT)

one drop at a time until pale orange-pink color changes to colorless or pale
yellow. Make sure solution is thoroughly mixed. Count the number of drops
added. Hold bottle vertically.

5. Discard titrated sample and rinse tube out with sample water.

6. Multiply the number of drops used in Step 4 by 50 (fifty). Record as ppm

Hydrogen Peroxide.

PERACETIC ACID

NOTE: This method may be used to test low to high con cen tra tion of peracetic
acid. Choose the pro ce dure that is most appropriate for the sample being tested.

1 drop = 15 ppm

1. Fill test tube (0715) to 10 mL line with sample water.

2. Add 10 drops of *Sulfuric Acid, 1:1 (6141WT). Swirl to mix. Make sure

solution is thoroughly mixed.

3. Add 1 drop of Ferroin Indicator (6410). Swirl to mix. Make sure solution is

thoroughly mixed.

4. Add 1 drop of *Potassium Iodide 20% Solution (6521). Swirl to mix. Make

sure solution is thorougly mixed. Solution will turn a cloudy brown if
peracetic acid is present.

5. While gently swirling tube, add Peracetic Acid Titrant (S-6155), one drop

at a time until brown color changes to a clear, pale orange-pink which
persists for 20 seconds. Make sure solution is thoroughly mixed. Count the
number of drops added.

6. Multiply the number of drops used in Step 5 by 15 (fifteen). Record as ppm

Peracetic Acid.

For example:
10 drops x 15 = 150 ppm Peracetic Acid

1 drop = 6ppm

Fill the test tube to the 25 mL line. Follow the test procedure and use 25 drops
of *Sulfuric Acid, 1:1 (6141WT), 3 drops of Ferroin Indicator (6410) and 3
drops of *Potassium Iodide 20% Solution (6521). In Step 6 multiply the number
of drops used by 6 (six). Record as ppm Peracetic Acid.

For example:
10 drops x 6 = 60 ppm Peracetic Acid

1 drop = 300 ppm

For higher concentrations of peracetic acid use the 0.5 mL pipet (0353) to add

0.5 mL of the sample to the test tube (0715). Fill the tube to the 10 mL line with
hydrogen peroxide/peracetic acid-free water. Follow Steps 2 - 5. In Step 6
multiply the number of drops used by 300 (three hundred). Record as ppm
Peracetic Acid

For example:
10 drops X 300 = 3000 ppm Peracetic Acid

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