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 C-TO17KIT TO-17 Starter Kit Price on request T-11OP Ozone precursors trap, TT24-7 Price on request HEDFLD32_5L Fluode gas sampling bag with PTFE dual-valve, 5L Price on request