Airborne surface disinfection (ASD) with vaporized hydrogen peroxide

Vaporized hydrogen peroxide bio-decontamination destroys many types of viruses, microorganisms, spores, bacteria and fungi. It is widely used to decontaminate isolators, clean rooms and other aseptic applications, including healthcare and animal laboratory facilities. In this white paper, we delve into how capacitive thin-film polymer humidity sensors are used to monitor vaporized hydrogen peroxide concentration, relative saturation, temperature and other parameters during bio-decontamination applications. 

Learn how Vaisala's unique PEROXCAP sensing technology delivers reproducible measurements of vH₂O₂ bio-decontamination cycle. The compact HPP270 probe measures relative humidity (%RH), relative saturation (%RS), temperature, and dew point temperature  of air mixture during bio-decontamination. Parameter values are ppm, showing absolute concentrations of H₂O₂ and H₂O, and saturated vapor pressure.  

Content:

• Types of sterilization
• The stages of a bio-decontamination cycle with H₂O₂
• The difference between relative saturation and relative humidity
• Why monitoring relative humidity is not enough
• Reducing relative humidity before the conditioning phase?
• Measurement Traceability
• Measurements in practice
• Example of field use of the Indigo80 portable indicator