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 SERZ-1070 Spare bag sampling accessory, ACTI-VOC Price on request U-HSVB-20 Replacement Vial Block, for HiSorb Agitator Price on request HEDFLD32_5L Fluode gas sampling bag with PTFE dual-valve, 5L Price on request