Study Suggests You Should Be Using a Microbial Air Sampler With Three Aspirating Heads Posted: Nov 18, 2019 TRIO.BAS for At Rest / In Operation / At the End of Shift - Monitoring Posted: Sep 25, 2018 TRIO.BAS GAS Designed for Microbial Monitoring of Compressed Gases Posted: Nov 01, 2016 Microbial Air Sampler Has 3 Aspirating Heads Posted: Apr 25, 2016 Triple Headed Microbial Air Sampler Offers Advantages Posted: Apr 05, 2016