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 U-T3ATX-2S Air Toxics, C2 - C14 (TO-14), cold trap Price on request C-MCTEKIT-120 Low Temperature MCTE Starter Kit Price on request U-T18325-2S EPA 325 cold trap, UNITY 2/xr and TD-100/xr Price on request