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 C-HSPH HiSorb handle, for manual probe extraction Price on request U-COV1517 Spare O-ring, brown, for POD sampler (diffusive body), pk 20 Price on request U-COV450 O-Rings, low-emission,pk100 Price on request