Polyester gas sampling bag with PTFE dual-valve, 2L Back Catalog number: POL32_2L Availability: In the manufacturer's stock Price on request - + Recommended 1231 BALLOONS FOR GAS SAMPLING, 1,5Liters Price on request U-T16GHG-2S Greenhouse gases C2 - C14 cold trap Price on request T-11OP Ozone precursors trap, TT24-7 Price on request