Tedlar PVF Gas Sampling Bags with PTFE straight On/Off valve, 2L Back Catalog number: TDL31_2L Availability: In the manufacturer's stock Price on request - + Recommended DEV41_5L DEVEX sampling bags 5L, stopcock & septum Price on request T-11OP Ozone precursors trap, TT24-7 Price on request POL32_5L Polyester gas sampling bag with PTFE dual-valve, 5L Price on request