Tedlar PVF Gas Sampling Bag with PTFE dual-valve, 2L Back Catalog number: TDL32_2L Availability: In the manufacturer's stock Price on request - + Recommended C-CRCK Canister Rack Connection Kit, for connecting 15 x 1/4" outlet canisters to U-RACK02 Price on request 1970-0011-R O-RING -011 .301 ID X .070 W Each Price on request 1970-0007 O-RING-007 .145 ID x .070 W for LFS-113 (5 Requi Price on request