Tedlar PVF Gas Sampling Bag with PP valve, 6L, 3/16'' OD (4.76mm) Back Catalog number: HEDTDL71_6L Availability: In the manufacturer's stock Price on request - + Recommended U-COV201 O-ring, Injector HiSorb & HiSorb Storage, pk 10 Price on request HEDNDV61_50L New Devex Sampling Bag with ABS Valve & Septum Fitting, 50L Price on request U-T17O3P-2S Ozone precursors cold trap, UNITY 2/xr and TD-100/ Price on request