Peracetic Acid Test Strips

Choose from 4 Indigo® peracetic acid test strips for your poultry, food or medical device sanitizing and disinfection needs. All come with 100 test strips/vial, a minimum guaranteed 3 year shelf life. Full documentation provided: Stability Statement, Certificate of Analysis & SDS on-line; Certificate of Conformance on request. Optional next day delivery in any quantity of most items.

Buy Indigo® peracetic acid test strips, the brand you can trust for accuracy & technical support. Call us on our toll free line for immediate assistance or e-mail us with your questions. 1 hour response is typical during business hours, M-F, slightly longer on weekends.

Peracetic Acid Disinfectant-Sanitizer

Peracetic acid is an organic compound used as an eco-friendly sanitizer, disinfectant, or sterilizer in the food industry where food safety can be compromised by microbial contamination. It has a better germicidal response than hypochlorite and can inactivate Gram negative bacteria although is less effective against Gram positive bacteria. Nevertheless, PAA is a colorless liguid that is an effective antimicrobial agent used in processing poultry, meat, seafood, eggs & is certified as an organic produce wash. Food processors find that ~80 ppm of PAA works well when the sanitizer is in direct contact with the food item.

For sanitizing food processing equipment hard surfaces, higher concentrations, up to 500 ppm, may be required in beverage plants, breweries, wineries and restaurants. Medical supplies and equipment such as endoscopes may need even higher concentrations, in the range of 3000ppm.

As a biocidal oxidizer it is largely unaffected by organic matter and generates fewer toxic byproducts (potential mutagens) compared with chlorine disinfectants. This in turn makes it ideal for municipal wastewater treatment and  maintaining drinking water needed for human consumption. Its range of application is broad spectrum where it finds use in water tower treatment & the pulp industries as a paper bleaching agent or to prevent biofilm formation.  Peracetic acid is relatively unaffected by water hardness and can be diluted with regular tap water.

Peracetic acid compound disinfectant chemical structure

The chemical disinfectant peracetic acid, formula CH3CO3H, is an organic acid that occurs in an equillibrium solutin with hydrogen peroxide & acetic acid. It has melting & boiling points of 0oC & 105oC respectively. Its preferred IUPAC name is ethaneperoxoic acid, CAS Number 79-21-0. Synonyms such as peroxyacetic acid, acetic peroxide, & acetyl hydroperoxide are recognized by our 3D Molecular Model Builder should you need a model to show its structure. This on-line tool does not recognize commercial brands such as Proxitane WW-12, Peraclean 15, VigorOx WWT II, SaniDate 15, Peragreen WW, and Peragreen 22WW & others approved for wastewater treatments by the US EPA. 

Testing for PAA can be done with different methods. The most convenient and economical are test strips. Other analytical methods such as spectrophotometry or electrochemical sensors are required for quantitative measurements.

Indigo® PAA Concentration Test Strips

Peracetic acid's versatility is often determined by contact time as well as concentration. Choose the right test strip for the job.

  • 0-50ppm: 0.25, 0.5, 1, 3, 5, 10 ppm; read results in 10 seconds
  • 0-160ppm: 10, 30, 60, 80, 160ppm; read results in 10 seconds
  • 0-500ppm: 100, 250, 500ppm; read results in 10 seconds
  • 0-3000ppm: 500, 1000, 1500, 2000, 2500, 3000 ppm; read results in 5 seconds
Displaying 1 to 4 (of 4 products)
Peracetic Acid Test Strips 0-50ppm

Peracetic Acid Test Strips 0-50ppm

SKU: 33818-PA1
$16.95USD or lower Each
Peracetic Acid Test Strips, 0-160ppm

Peracetic Acid Test Strips, 0-160ppm

SKU: 33818-PA2
$17.95USD or lower Each
Peracetic Acid Test Strips, 0-500ppm

Peracetic Acid Test Strips, 0-500ppm

SKU: 33818-PA5
$18.95USD or lower Each
Peracetic Acid Sterilization Test Strips

Peracetic Acid Sterilization Test Strips

SKU: 33818-PA30
$18.95USD or lower Each
More Information

Advantages & Disadvantages


  • no toxic residues, rinsing not needed
  • works well at freezer/cooler temperatures, good for meat processors


  • corrosive to eyes, skin, respiratory tract
  • strong oxidizer reacts with metals as brass, copper, iron & zinc

See Safety/Instructions for necessary precautions.

PAA Test Strip Common Features

  • Clear instructions with the labeled color chart
  • Indicator pads on high contrast plastic strips for accurate readings
  • Stiff plastic strips can be dipped into tubes
  • Certificate of Analysis, Stability & SDS Statements available online; Certificate of Conformance on request.
  • 3 year guaranteed shelf life

Note: All test strips Made in the USA & are Q/A'd against NIST standards.

Miscellaneous Information

Test Strip Expiration Dates; Good Today, Dead Tomorrow? Don't toss good test strips away. Good today doesn't mean bad tomorrow.
Diluting Chlorine, Hydrogen Peroxide, Quats, Peracetic Acid is Easy. Understanding metric makes it very easy to dilute disinfectant to any ppm whether spray bottles or backpack sprayers.


How Does Peracetic Acid Disinfect?

Peracetic acid oxidizes the membranes of microorganisms by electron transfer. The higher the EV potential, the faster this transfer occurs and the faster the microbe is inactivated.

Oxidation Capacity of Various Disinfectants

Disinfectant and EV (Electronic Volts)

  • Peracetic Acid - 1.81
  • Chlorine Dioxide - 1.57
  • Sodium Hypochlorite - 1.36

Follow the directions on the label. All Indigo® peracetic test strips are "quick response". Dip the strip & compare to the color chart within 10 seconds. Peracetic acid's effective pH range is reduced as it increases from a neutral 7 to slightly alkaline levels between 8 & 9.

EPA Acute Exposure Guideline Levels indicate peroxyacetic acid can be corrosive/irritating to eyes, mucous membranes and skin after exposure to concentrations as low as 5 ppm for only 3 min. Wearing PPE is recommended especially when handling concentrates or where ventilation is poor.

Frequently Asked Questions

FAQ for Peracetic Acid

Peracetic acid is an equilibrium with hydrogen peroxide & acetic acid. It eventually breaks down into water, oxygen and carbon dioxide.