Waterloo - Model SE - Waterloo Membrane Sampler (WMS) Brochure

The Waterloo Membrane Sampler (WMS), a passive sampler for monitoring volatile organic compound (VOC) vapor concentrations, was developed at the University of Waterloo by Drs. Tadeusz Górecki and Suresh Seethapathy.  The researchers had identified a need for a passive sampler with resistance to water vapor, which can saturate the sorbent present in passive samplers, for sampling in environmental vapor matrices where water vapor concentrations can be high, such as in soil gas, and they believed that the unique design of the WMS™ gave it an exclusive position in the marketplace for passive samplers.