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Chlorine Dioxide (ClO2) Detection

Portable & fixed-point Cl2 detectors for textiles, pulp, and paper industries.

About Chlorine Dioxide Detection

Chlorine Dioxide is a yellow to reddish-yellow gas used predominantly in bleaching and stripping of textiles, pulp, and paper industries.

It also serves as a disinfectant and sanitizer in water treatment and food processing. Its unique properties allow for efficient sterilization without creating harmful chlorinated byproducts. Despite its benefits, ClO2 is a potent irritant and a strong oxidizer, necessitating advanced detection and control measures to prevent occupational hazards.

Common Challenges

  • Highly reactive and can cause severe respiratory irritation even at low concentrations.
  • Potential for explosive reactions when exposed to sunlight or heat.
  • Difficult to detect at low levels without specialized equipment.

Current Guidelines


  • PEL-TWA: 0.1 ppm (0.3 mg/m³)
  • PEL-STEL: 0.3 ppm (0.9 mg/m³)


In agriculture, chlorine dioxide is used for washing fruits and vegetables to eliminate pathogens and extend shelf life. It's important to monitor ClO2 levels to ensure the residues on produce are safe for consumption. Read more...

Chlorine dioxide is employed in the food industry for sanitizing equipment, containers, and surfaces. It's vital to monitor its levels to ensure food safety, prevent contamination, and protect workers from excessive exposure. Read more...

In the oil and gas industry, chlorine dioxide is used for water treatment and to control microbial growth in hydraulic fracturing operations. Monitoring its levels is essential for environmental protection and worker safety. Read more...

Chlorine dioxide is widely used for disinfecting drinking water. It effectively kills bacteria, viruses, and some types of parasites, making it crucial for public health. Monitoring ClO2 levels is essential to ensure effective disinfection while preventing overexposure, which can be harmful to humans. Read more...

In paper production, chlorine dioxide is used as a bleaching agent, favored for its ability to brighten paper without creating harmful byproducts. Monitoring ClO2 levels is important to maintain product quality and environmental safety, and to protect workers from exposure. Read more...


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