Tedlar PVF Gas Sampling Bags with PTFE straight On/Off valve, 2L Back Catalog number: TDL31_2L Availability: In the manufacturer's stock Price on request - + Recommended M-SPC05-120 Collar spacer, alum 5mm, for M-CTE120I,pk 6 Price on request U-T11GPC-2S Unity 2/TD-100 Cold Trap carbon C4/5-C30/32 Price on request C-CRCK Canister Rack Connection Kit, for connecting 15 x 1/4" outlet canisters to U-RACK02 Price on request