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 TDL32_5L Tedlar PVF Gas Sampling Bag with PTFE dual-valve, 5L Price on request P-CPS20 Dowty seals, for VOC-Mole cap assembly,pk 20 Price on request TDL71_0.5L Tedlar PVF Gas Sampling Bag with PP valve, 0,5L Price on request