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 H4-AXAAC HiSorb probe, DVB/CWR/PDMS, inert, standard length, pk 6 Price on request P-CP010 VOC-Mole cap assembly,pk10 Price on request U-T19PAH-2S PAH cold trap, UNITY 2/xr and TD-100/xr Price on request