Tedlar PVF Gas Sampling Bag with PTFE dual-valve, 2L Back Catalog number: TDL32_2L Availability: In the manufacturer's stock Price on request - + Recommended M-SPC15-250 Collar spacer, alum 15mm, for M-CTE250I,pk 4 Price on request M-MCHOR O-Ring, micro-chamber pan seal, for M-CTE120I,pk 6 Price on request U-T16GHG-2S Greenhouse gases C2 - C14 cold trap Price on request