Tedlar PVF Gas Sampling Bags with PTFE straight On/Off valve, 2L Back Catalog number: HEDTDL31_2L Availability: In the manufacturer's stock Price on request - + Recommended M-MCAL50 Disposable dish, alum, 50mL,pk100 Price on request H2-AXAAC HiSorb probe, PDMS/CWR, inert, standard length, pk 6 Price on request M-MCHOR250 O-Ring, micro-chamber pan seal,pk 4 Price on request