PAA Monitors

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Steri-Trac® Peracetic Acid
Area Monitor

The EnviroCell™ Peracetic Acid sensor

The EnviroCell™ Peracetic Acid sensor detects Peroxyacetic Acid concentration in parts-per-million (ppm) (Also available for other gases.)

Large digital tri-color LED display of Peracetic Acid Concentration in ppm with 2 user defined alarm thresholds:

  • Low alarm results in a flashing yellow display and pulsing alarm horn.
  • High alarm results in a flashing red display and continuous alarm horn
  • Alarm silence button has user configurable latching feature ChemDAQ’s Sensor Calibration/Exchange Program (SXP®) eliminates the time and materials cost of in-house calibration by providing automatic shipments of pre-calibrated EnviroCell Peracetic Acid sensors.

DAQ® Centralized Monitoring System

Continuously tracks and analyzes peracetic acid exposure data from one or more Steri- Trac PAA Monitors

In addition to spontaneous high and low alarms from each Steri-Trac area monitor, the DAQ reports average exposure over time based on EPA recommended AEGL for peracetic acid.

DAQ is a gas detection and alarm data acquisition system that includes automatic record keeping of exposure data for employee safety records.

Steri trace

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ChemDAQ Gas Detection, Monitoring and Alarm Systems Designed specifically for occupational safety, the ChemDAQ peracetic acid monitoring system gives immediate indication of PAA concentration in the work area so that workers can protect themselves from acute and chronic exposure. The steri-trac area monitor has alarm limits and a real time display of Peroxyacetic Acid concentrations in ppm to provide safety from acute exposure. The DAQ Central Monitoring System tracks EPA AEGL-1 and AEGL-2 with alerts that can provide a level of safety from chronic exposure to Peroxyacetic Acid. Contact ChemDAQ today to learn how we can help you provide a safer work environment by monitoring exposure to peracetic acid and other gases that may leak into the breathing zone.

Peracetic Acid (Peroxyacetic Acid) Information

Health Effects: 
Peracetic Acid is a strong oxidizing agent and a primary irritant, affecting the skin, respiratory system and eyes.
RTECS Description: Mutagen, Primary Irritant

Exposure Limits:

EPA AEGL 1: 0.52 mg/m3 (0.17 ppm)
EPA AEGL 2: 1.6 mg/m3 (0.51 ppm)
EPA AEGL 3: 4.6 mg/m3 (1.3 ppm)

*EPA Acute Exposure Guidelines, 8 hour TWA available at:

Still not sure if you need Peroxyacetic Acid Area Monitoring? Visit our PAA Health Risks page.

Steri-Trac® PAA Monitor

Availability: Available1
Sensor Type: Electrochemical
Range: 0 – 3 ppm
Resolution: 0.01 ppm
Temp Range: -20 to +50oC

Specifications are subject to change

Properties and Applications:

Peracetic Acid is a strong oxidizing agent, stronger than hydrogen peroxide, and PAA is usually used as an equilibrium mixture with acetic acid and hydrogen peroxide in aqueous solution. It is widely used in healthcare, food processing and water treatment as a disinfectant and sterilant wash.

As an antimicrobial agent, PAA is broadly effective against microorganisms and is not deactivated by catalase and peroxidase, the enzymes that break down hydrogen peroxide. This along with its stronger oxidizing properties makes PAA more effective as an antimicrobial than hydrogen peroxide. Conversely, peroxyacetic acid is potentially more dangerious to anyone exposed to it.

Highly reactive compounds are often environmentally friendly since they react quickly and do not persist, PAA is no exception. Similarly, peracetic acid breaks down in food to produce only mild residues (acetic acid, oxygen and water). Therefore PAA can be used in non-rinse applications for food preparation.
Physical Properties:

Chemical Formula: CH3CO3H
Physical form: Liquid. Forms colorless solution in water.
LEL: Explodes on heating to 110°C
Odour : Acrid Odor
MW: 76.05 g/mol
Rel. Gas Density: 2.64 (Air = 1)
MP: 0.1°C
BP: 105°C

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DAQ® Centralized
Monitoring System

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Ethylene Oxide and Hydrogen Peroxide monitoring is also available, contact us for more information