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 1970-0234 O-RING-234 For High Flow Damper Plate Price on request U-HSVB-20 Replacement Vial Block, for HiSorb Agitator Price on request C-KIT325T-2S 325 Tube Kit Price on request