Gas Trap Filters

Photo of VACU-GUARD™ 150 Gas Traps. Whatman
The VACU-GUARD line of filter devices combine the best of three classic chemical traps with proven vacuum protective (hydrophobic) PTFE membrane. The PTFE membrane is built into a pleated cartridge and is permanently fuse bonded inside the base of the capsule. These types of chemical traps have been recommended by Menniger and Vilardi for protection of vacuum pumps and the environment, from their exhaust, when used to "polish" incoming air from an evaporation system. The activated carbon traps are recommended for organic vapors.