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Hester Groenevelt

SiREM’s Waterloo Membrane Sampler Featured in Environmental Science, Processes and Impacts

2026-03-15T10:20:53-06:00March 14th, 2018|Tags: , |

An article about SiREM's Waterloo Membrane Sampler (WMS) was featured on the cover of the journal Environmental Science, Processes and Impacts on pages 1363-1373 in Issue 11 in November 2017. SiREM is a division of Geosyntec.

SiREM Expands Range of Passive Samplers for VOC Vapor Monitoring with the Waterloo Membrane Sampler

2026-03-15T10:20:49-06:00February 21st, 2018|Tags: |

SiREM (a division of Geosyntec) has launched an independent website for the Waterloo Membrane Sampler TM (WMS).  WMS is a unique passive sampler that can be used for indoor air, ambient air, sub-slab vapor and soil gas sampling of volatile organic compounds (VOCs). 

Jeff Roberts and Hester Groenevelt to Present at International Passive Sampling Workshop and Symposium

2026-03-15T10:20:24-06:00June 2nd, 2017|Tags: , |

Jeff Roberts and Hester Groenevelt (Ontario) will Present at International Passive Sampling Workshop and Symposium (IPSW) at the Ferguson Block in Toronto, Ontario, Canada, June 1-2, 2017.

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