Polyester gas sampling bag with PTFE dual-valve, 5L Back Catalog number: HEDPOL32_5L Availability: In the manufacturer's stock Price on request - + Recommended U-T17O3P-2S Ozone precursors cold trap, UNITY 2/xr and TD-100/ Price on request U-HSVB-20 Replacement Vial Block, for HiSorb Agitator Price on request P-CPS20 Dowty seals, for VOC-Mole cap assembly,pk 20 Price on request