Multi-layer gas sampling bags, PP valve (4.76mm), 1L Back Catalog number: MBT71_1L Availability: In the manufacturer's stock Price on request - + Recommended U-T17O3P-2S Ozone precursors cold trap, UNITY 2/xr and TD-100/ Price on request U-COV1516 Spare O-ring, black, for POD sampler (support body), pk 10 Price on request H4-AXAAC HiSorb probe, DVB/CWR/PDMS, inert, standard length, pk 6 Price on request