Devex Gas sampling bags 10L, PP screw cap valve, 3/16'' OD (4.76mm) Back Catalog number: HEDDEV71_10L Availability: In the manufacturer's stock Price on request - + Recommended HEDFLD32_2L Fluode gas sampling bag with PTFE dual-valve, 2L Price on request U-T13DHS-2S DHS application cold trap, UNITY 2/xr andTD-100/xr Price on request U-T20PAM-2S Focusing trap, Photochemical Assessment Monitoring Stations (PAMS), for UNITY-xr, TD100-xr, Centri Price on request