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 U-T16GHG-2S Greenhouse gases C2 - C14 cold trap Price on request M-DSK15-120 Spacer disc, alum, 1.5mm, for M-CTE120I,pk 24 Price on request C-TO17KIT TO-17 Starter Kit Price on request