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 HEDNDV61_25L New Devex Sampling Bag with ABS Valve & Septum Fitting, 25L Price on request U-T13DHS-2S DHS application cold trap, UNITY 2/xr andTD-100/xr Price on request HEDNDV31_50L New Devex Sampling Bag with PTFE Valve & Septum Fitting, 50L Price on request