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Peracetic Acid Test Kits

Peracetic Acid Test Kits

What is Peracetic Acid?

Peracetic acid (PAA) is a versatile oxidizing disinfectant that is formed from a reaction between acetic acid and hydrogen peroxide. It is commonly used as a sanitizing agent in the food and beverage industries to disinfect equipment, pasteurizers, tanks, pipelines, evaporators, fillers, and contact surfaces in food processing plants. The pulp and paper industry uses peracetic acid as a delignification and bleaching agent. PAA is also becoming a popular biocide in wastewater treatment and is even used in aquaculture tanks. Part of PAA’s rising popularity is because it decomposes into non-toxic by-products.

About Our Test Kits.

CHEMetrics’ colorimetric test kits for the analysis of PAA in water are available in both visual and instrumental formats. Our self-filling ampoule technology reduces analyst exposure to reagent chemicals and test procedure complexity. All of our PAA test kits employ the total chlorine DPD method which produces a pink color in the presence of PAA. Recently Standard Methods for the Examination of Water and Wastewater published a validated PAA test procedure based on this method.

Click on a catalog number in the tables below for more information or to purchase a test kit.

Visual Kits

Range MDL Method Kit Catalog No. Refill Catalog No.
0-1 & 0-5 ppm 0.05 ppm DPD K-7904 R-7904
0-70 & 0-300 ppm 7 ppm DPD K-7904A R-7904A
0-130 & 0-600 ppm 15 ppm DPD K-7904B R-7904B
0-1200 & 0-6000 ppm 120 ppm DPD K-7904C R-7904C
0-30 & 0-150 ppm 3 ppm DPD K-7904D R-7904D

Instrumental Kits

Range Method Kit Catalog No.
0-5.00 ppm DPD K-7913
0-5.0 ppm DPD I-2020

Analytical Standard

Product Kit Catalog No.
Peracetic Acid Standard A-7925

The DPD Method


References: APHA Standard Methods Online, Method 4500-PAA-2019.
In the Peracetic Acid water test kit, the sample is treated with an excess of potassium iodide. Peracetic acid oxidizes the iodide to iodine. The iodine then oxidizes DPD (N, N-diethyl-p-phenylenediamine) to form a pink-colored species that is directly proportional to the peracetic acid concentration in the sample. Results are expressed as ppm (mg/L) peracetic acid.Various oxidizing agents such as halogens, ozone, and cupric ions will produce high test results. Hydrogen peroxide does not interfere if present at levels comparable to the peracetic acid levels.