Many Gas Samples are laden with water. An effective catchpots can remove most of the water from the sample This helps in reducing load on your downstream Cooler and / or Filter. The following combination of MOC are available: Derlin Ends and Acrylic tubes SS316 ends and Borosilcate Glass Tubes SS316 ends and Tubes PTFE Ends and Borosilicate Glass Tubes These Catchpots are available in three different sizes.