Chlorine dioxide (ClO2) is a yellow-green gas with an odour similar to chlorine. Although chlorine dioxide has chlorine in its name, It is very different from elemental chlorine, both in its chemical structure and in its behaviour.

Like other decontamination methods, CD gas decontamination is a multi-step process. The 4 steps of the CD gas process are pre-condition, condition, injection and exposure, and aeration. We speak of a parametric release as the process goes to the next step only after achieving the setpoints of previous step, thus assuring the fulfilment of the pre-established protocol. This make the decontamination method very flexible as to differences in volume or loads.


Step 1: Pre-conditionning

Raising of relative humidity (RH) levels to between 60-75%.

Step 2: Conditionning

Hold time once relative humidity set point has been reached.

Step 3: Injection and exposure

Generation and concentration monitoring of chlorine dioxide gas.

Step 4: Aeration

Removal of chlorine dioxide gas from chamber through HVAC or actif carbon scrubber.