Tedlar PVF Gas Sampling Bags with PTFE straight On/Off valve, 5L Back Catalog number: TDL31_5L Availability: In the manufacturer's stock Price on request - + Recommended TDL32_2L Tedlar PVF Gas Sampling Bag with PTFE dual-valve, 2L Price on request U-T9TNX-2S Unity 2/TD-100 Cold trap, Tenax TA Price on request C-POD-KIT04 POD Starter kit: Carbograph 2TD Price on request