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 U-COV201 O-ring, Injector HiSorb & HiSorb Storage, pk 10 Price on request U-T2GPH-2S UNITY 2 & TD-100 Cold trap general purpose hydrop Price on request U-CENKIT Starter Kit: Centri booster pack (DiffLok caps and O-rings) Price on request