Advanced Chemical Sensors passive monitoring badges eliminate the need for a mechanical pump to collect the vapour. The pump is replaced by a solid absorbent separated from the air by a porous membrane.

Low cost and easy to use
Wide applications in measuring employee exposure and room concentrations of many regulated materials.
Badges available for almost all medical gases and for many industrial chemicals (see list)
Results accepted in US Federal Court as a valid indication of actual exposure.
Up to 3 vapours on one badge (dependant on vapour)

The same badge can be used for 15 minute or 8 hour tests. STEL/TWA