Tedlar PVF Gas Sampling Bags with PTFE straight On/Off valve, 2L Back Catalog number: TDL31_2L Availability: In the manufacturer's stock Price on request - + Recommended MBT71_1L Multi-layer gas sampling bags, PP valve (4.76mm), 1L Price on request H1-AXABC HiSorb probe, inert, short, pk/6 Price on request DEV71_10L Devex Gas sampling bags 10L, PP screw cap valve, 3/16'' OD (4.76mm) Price on request