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 C-CL010 Penclips, pk10 Price on request C-TDKIT-01 Essential TD Starter Kit Price on request U-COV201 O-ring, Injector HiSorb & HiSorb Storage, pk 10 Price on request