Peracetic Acid Test Kits
Visual Kit
| Range | MDL | Method | Type | Test Kit | Refill |
|---|---|---|---|---|---|
| 0.0 - 1.0 & 0 - 5 ppm | 0.05 ppm | DPD | CHEMets | K-7904 | R-7904 |
Photometric Kits
| Range | Method | Type | Test Kit | SAM Kit |
|---|---|---|---|---|
| 0 - 5.00 ppm | DPD | Vacu-vials | K-7913 | I-2020 |
The CHEMetrics test kits for the determination of Peracetic Acid (PAA) in aqueous solutions are available in both visual and instrumental colourimetric formats, employing the established DPD method, delivering sensitivity and accuracy within two minutes or less. Our self-filling reagent ampoule technology reduces analyst exposure to reagent chemicals and test procedure complexity. Premixed. Premeasured. Precise. Each kit contains 30 tests. Suitable for food and beverage and pulp and paper manufacturing as well as wastewater applications. If you are testing high concentrations of PAA, dilution may be used to extend the range of our test kit.
The Peracetic Acid Vacu-vials test kit K-7913 can be used with a Hach DR900 Colorimeter in conjunction with the CHEMetrics DR900 Vacu-vials® Adapter, Cat. No. A-0215. No endorsement by Hach Company is implied or intended.
DPD Method
In the Peracetic Acid DPD test method, the sample is treated with an excess of potassium iodide. Peracetic acid oxidises the iodide to iodine. The iodine then oxidises DPD (N, N-diethyl-p-phenylenediamine) to form a pink-coloured species that is directly propoptional to the peracetic acid concentration in the sample. Results are expressed as ppm (mg/l) peracetic acid.
Various oxidising 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.
CHEMetrics Research and Development Director Joanne Carpenter was part of the Standard Methods Joint Task Group that established a new standard method for the analysis of PAA based on the well-established N-N-diethyl–p-phenylenediamine (DPD) method, published in Standard Methods for the Examination of Water and Wastewater, Method 4500-PAA in 2019. All the CHEMetrics PAA test kits are based on this standard method. Click here for more information.
Reference:
APHA Standard Methods Online, Method 4500-PAA-2019.
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Technical Data Sheet |
Applications
Peracetic acid is a strong oxidising agent and disinfectant, effective against fungi, bacteria and viruses. It decomposes into non-toxic byproducts, leaving no residue, making it highly versatile in application.
PAA is commonly used as a sanitising agent in food and beverage industries such as dairy, production plants, breweries, wineries and beverate plants, to disinfect equipment, pasteurisers, tanks, pipelines, evaporators, fillers, chillers and contact surfaces in food processing plants. PAA was patented in 1950 in the US to treat fruit and vegetables to lessen spoilage from bacteria and fungi.
In the medical field, it is used to remove surface contaminants from endoscopic tubing. PAA is also used as a sterilising agent in endodontics and dentistry. The USEPA registered PAA as an antimicrobial for indoor use on hard surfaces in 1986.
PAA is also becoming a popular biocide in wastewater treatment and is even used in aquaculture tanks. PAA is also used as a disinfectant for cooling tower water, inhibiting biofilm formation and the growth of Legionella bacteria. The pulp and paper industry uses peracetic acid as a delignification and bleaching agent.
What is Peracetic Acid?
Peracetic acid, also known by its longer name peroxyacetic acid (PAA) is an organic, acid with the chemical formula CH3C(O)-OOH. It is a colourless liquid with a odour similar to acetic acid (vinegar). PAA differs from acetic acid in that PAA is a peroxyacid with a -C(=O)-O-OH group whereas acetic acid is a carboxylic acid with a -C(=O)-OH group. PAA is produced industrially by the autoxidation of acetaldehyde (CH3CHO) but it can also be produced from acetic acid and hydrogen peroxide in the presence of sulphuric acid.
PAA is a strong oxidising agent and can be highly corrosive and is a severe irritant to eyes, skin and lungs. PAA is generally safe to use with most plastics, but is mildly corrosive to soft metals such as aluminium, brass and copper. PAA decomposes to acetic acid and O2.
Standard Solution
CHEMetrics® offers a standard solution for peracetic acid (PAA), catalogue no. A-7925, for the preparation of 1.0 ppm standard, offers the analyst an easy and convenient method to confirm the accuracy and reliability of PAA measurements.