Devex Gas sampling bags 5L, PP screw cap valve, 3/16'' OD (4.76mm) Back Catalog number: DEV71_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 M-DSKPF Sample disc, 1.0mm thickness, PTFE,pk 6 Price on request T-8MAT Materials emissions cold trap, TT24-7 Price on request