Tedlar PVF Gas Sampling Bag with PP valve, 0,5L Back Catalog number: TDL71_0.5L Availability: In the manufacturer's stock Price on request - + Recommended U-HSVB-20 Replacement Vial Block, for HiSorb Agitator Price on request TDL71_10L Tedlar PVF Gas Sampling Bag with PP valve, 10L, 3/16'' OD (4.76mm) Price on request U-COV450 O-Rings, low-emission,pk100 Price on request