LaMotte PERACETIC ACID TEST KIT 7191-01-FMC - Manual (Page 2)

CON CEN TRA TION OF PERACETIC ACID
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
NOTE: For low concentrations of peracetic acid (20 - 90 ppm) 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
For high concentrations of peracetic acid (300 - 5000 ppm) 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
To reorder, contact us at:
To re or der, con tact us at:
FMC Corporation
1735 Mar ket Street • Phil a del phia • Pennsylvania • 19103• USA
Phone 800-345-2701 • Fax 215-299-6612
Visit us on the web at www.microbialcontrol.fmc.com
67191-01-FMC-1.11