Tedlar PVF Gas Sampling Bag with PP valve, 5L, 3/16'' OD (4.76mm) Back Catalog number: TDL71_5L Availability: In the manufacturer's stock Price on request - + Recommended M-DSK15-250 Spacer disc, alum, 1.5mm, for M-CTE250I,pk 24 Price on request P-CPS20 Dowty seals, for VOC-Mole cap assembly,pk 20 Price on request U-HSVB-20 Replacement Vial Block, for HiSorb Agitator Price on request