Polyester gas sampling bag with PTFE dual-valve, 2L Back Catalog number: HEDPOL32_2L Availability: In the manufacturer's stock Price on request - + Recommended P-00020 VOC-Mole assembly, 380mm,pk10 Price on request U-T6SUL-2S Sulphur/labile cold trap, Price on request U-T17O3P-2S Ozone precursors cold trap, UNITY 2/xr and TD-100/ Price on request