Pro Tips on H₂O₂ Bio-Decontamination Vaporization & Measurement Joni Partanen Vaisala Industrial Instruments Product Manager Published: Jan 8, 2025 Life Science In our webinar, "Combining Cutting-Edge Technologies for Effective vH₂O₂ Bio-Decontamination," we received insightful questions from attendees that we couldn’t address during the session. This blog shares the answers from Joni Partanen, Vaisala Product Manager, and Emma Nykyri, Cleamix Training Manager. Together they offer practical advice on how to optimize bio-decontamination processes.Measuring Low ppm Levels with Vaisala ProbesQ: How low can the Vaisala HPP272 probe measure ppm? Can it measure 1 ppm at the end of a cycle?A: The HPP272 probe measures 0–2000 ppm but is designed for process control, not precise low ppm accuracy. It provides aeration progress indicators but isn't ideal for monitoring safety thresholds like 1 ppm. For low-level accuracy, other sensors should be used.Temperature Range of HPP272 ProbesQ: What temperatures can the HPP272 probes handle?A: Hydrogen peroxide can be accurately measured in temperature range of +5 to +50 °C. The probe itself can handle operating temperature of +0 to +70 °C with reduced accuracy, when measuring hydrogen peroxide outside the accuracy specified range.H₂O₂ Detection AccuracyQ: Could decomposed H₂O₂ impact the Vaisala sensor accuracy?A: While decomposition minimally affects the sensors, the stable microclimate within the PTFE filter of the HPP272 mitigates flow dependencies, ensuring reliable H₂O₂ readings.Measuring Dew Point in Mixed GasesQ: Can the sensor independently measure dew point in H₂O₂ mixtures?A: Yes, the HPP272 measures vapor pressures of water and H₂O₂, calculating precise dew points. This helps predict condensation risks, especially during temperature fluctuations.Calculating vH₂O₂ CyclesQ: Can we calculate vH₂O₂ needs for a room to achieve 90% relative saturation?A: Yes, theoretical calculations can predict the required H₂O₂ liquid volume. Consider variables like vaporization efficiency, decomposition rates, airflow, and room dimensions. Cleamix systems, paired with Vaisala sensors, simplify these calculations.Impact of High H₂O₂ ConcentrationsQ: Does high-concentration H₂O₂ damage surfaces?A: Material compatibility varies. Pre-testing is recommended to ensure finishes withstand higher concentrations. Properly controlled processes minimize risks.Using 50% H₂O₂ ConcentrationQ: Why isn’t 50% aqueous H₂O₂ commonly used?A: EU regulations limit the availability of 50% H₂O₂ in some markets. Where approved, the Cleamix VCS-series vaporizer units can use it. Compliance with local regulations ensures effective and safe disinfection.Combining Chemicals Like PAA with H₂O₂Q: Can we mix peracetic acid (PAA) with H₂O₂ to reduce residual saturation?A: While feasible, combining chemicals requires careful calibration. Cleamix systems focus on precise vH₂O₂ control, and introducing PAA necessitates additional testing and sensor integration.For more details on optimizing vH₂O₂ bio-decontamination processes, explore our resources like this application note on the effects of humidity, this FAQ or contact our experts directly. Reliable decontamination starts with accurate data and trusted solutions.
Vaporized Hydrogen Peroxide, Humidity and Temperature Measurement HPP270 Series The Vaisala PEROXCAP® Hydrogen Peroxide, Humidity, and Temperature Probe HPP270 series probes are designed for demanding hydrogen peroxide bio-decontamination.
Indigo80 handheld measurement device The latest addition to the Indigo family of transmitters and probes, the Indigo80 is a compact, handheld indicator and data logger.
Indigo500 Series Transmitters The Vaisala Indigo500 series transmitters are host devices for Vaisala Indigo-compatible, stand-alone smart probes. The Indigo500 series include multi-functional Indigo520 transmitter and Indigo510 transmitter with basic features.
Indigo200 Series Transmitters for Vaisala smart probes Vaisala Indigo200 series transmitters are host devices for displaying measurement values from Vaisala's Smart Humidity, Temperature, Dew Point, Moisture in Oil, CO2 and H2O2 Probes.
Why use Vaisala's HPP270 series probes for bio-decontamination?The PEROXCAP technology provides unmatched precision and real-time performance in measuring hydrogen peroxide vapor (vH₂O₂) concentration and temperature. These probes are specifically designed to excel in demanding bio-decontamination environments, offering accurate, repeatable measurements even in high-humidity conditions.Key highlights include: 1. Rapid Response Time: Critical for ensuring efficient decontamination cycles, reducing downtime, and validating processes with confidence. 2. Wide Measurement Range: Capable of detecting H₂O₂ from trace levels to high concentrations, supporting applications from cleanroom sterilization to isolators and pass-through chambers. 3. Integrated Data Logging: The Indigo80 and other Indigo transmitters provide traceable data for regulatory compliance, streamlining validation and reporting processes. 4. Robust Design: Built to withstand harsh conditions, ensuring long-term reliability in environments where data accuracy is required. The HPP270 probe series stands out for enabling faster, more reliable bio-decontamination cycles, helping facilities maintain sterility and meet strict regulatory standards effortlessly.Find your local Vaisala representative to learn more.
