Polyester gas sampling bag with PTFE dual-valve, 2L Back Catalog number: HEDPOL32_2L Availability: In the manufacturer's stock Price on request - + Recommended 1230 BALLOONS FOR GAS SAMPLING, 1Liter Price on request U-T19PAH-2S PAH cold trap, UNITY 2/xr and TD-100/xr Price on request U-T13DHS-2S DHS application cold trap, UNITY 2/xr andTD-100/xr Price on request