Devex Gas sampling bags 5L, PP screw cap valve, 3/16'' OD (4.76mm) Back Catalog number: HEDDEV71_5L Availability: In the manufacturer's stock Price on request - + Recommended HEDNDV31_25L New Devex Sampling Bag with PTFE Valve & Septum Fitting, 25L Price on request C-HSPVLP-20 HiSorb septum plug, pk 20 Price on request 1233 BALLOONS FOR GAS SAMPLING, 4Liters Price on request