Multi-layer gas sampling bags, PP valve (4.76mm), 1L Back Catalog number: HEDMBT71_1L Availability: In the manufacturer's stock Price on request - + Recommended TDL71_10L Tedlar PVF Gas Sampling Bag with PP valve, 10L, 3/16'' OD (4.76mm) Price on request HEDFLD32_2L Fluode gas sampling bag with PTFE dual-valve, 2L Price on request U-T1HBL-2S High boilers, C6 - C40, cold trap Price on request