Instrumentation by magnitude

Peróxido de hidrógeno

Medición de peróxido de hidrógeno vaporizado (VHP) para biodescontaminación en aisladores, cRABS y salas limpias, con concentración de H2O2, saturación relativa y humedad para ciclos validados y repetibles.

Vaporized hydrogen peroxide (VHP or vH2O2) is a safe, effective bio-decontamination method for removing microbial load from surfaces. It is used to decontaminate isolators, cRABS and transfer hatches in the pharmaceutical and life-science industries, as well as cleanrooms, biosafety cabinets and hospital rooms.

Measuring the process is not just about H2O2 concentration in ppm: relative saturation also matters during the cycle —the total humidity caused by water vapor and H2O2 vapor together—, which indicates when the air is about to condense. A repeatable, validated cycle depends on measuring these parameters stably, even in highly condensing conditions.

Use cases

Typical application areas

Pharmaceutical isolators and cRABS
Material transfer hatches and chambers
Room and biosafety cabinet decontamination
VHP generators and cycle development
Incubators and decontamination chambers
Hospital rooms and environments
Aseptic packaging in food and beverage

Technology

What makes Vaisala's PEROXCAP® technology unique

PEROXCAP® measurement principle: two HUMICAP® sensors, one with and one without a catalytic layer

PEROXCAP® combines two HUMICAP® capacitive thin-film sensors: one has a catalytic layer that decomposes H2O2 and measures humidity only; the other, without that layer, measures water and peroxide together. The difference between the two signals yields H2O2 concentration, relative humidity and relative saturation. The sensing element is kept warm to prevent condensation, and a rapid-heating purge function removes impurities and maintains accuracy between calibrations.

Long-term stability and repeatability in demanding H2O2 environments
Reliable measurement even in highly condensing conditions
Relative saturation: anticipates the condensation point of treated air
Purge function that removes contamination from the sensor
Range of 0 to 2000 ppm H2O2, with humidity, temperature and dew point on the HPP272
Traceable factory calibration, with a per-point certificate

AKRIBIS is an authorized Vaisala partner for distribution and technical support in the region — explore the full Vaisala instrumentation line.

Applications