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 HEDNDV31_25L New Devex Sampling Bag with PTFE Valve & Septum Fitting, 25L Price on request H1-AXAAC HiSorb probe, inert, standard, pk/6 Price on request U-T3ATX-2S Air Toxics, C2 - C14 (TO-14), cold trap Price on request