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 C-CL010 Penclips, pk10 Price on request C-TO17KIT TO-17 Starter Kit Price on request T-4ATX Air toxics cold trap, TT24-7 Price on request