Polyester gas sampling bag with PTFE dual-valve, 2L Back Catalog number: POL32_2L Availability: In the manufacturer's stock Price on request - + Recommended U-HSVB-20 Replacement Vial Block, for HiSorb Agitator Price on request U-T9TNX-2S Unity 2/TD-100 Cold trap, Tenax TA Price on request NDV31_5L DEVEX sampling bags with PTFE straight and septum valve with OD 6mm, 5L Price on request