Polyester gas sampling bag with PTFE dual-valve, 5L Back Catalog number: POL32_5L Availability: In the manufacturer's stock Price on request - + Recommended U-T13DHS-2S DHS application cold trap, UNITY 2/xr andTD-100/xr Price on request U-T18325-2S EPA 325 cold trap, UNITY 2/xr and TD-100/xr Price on request 1233 BALLOONS FOR GAS SAMPLING, 4Liters Price on request