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-T18325-2S EPA 325 cold trap, UNITY 2/xr and TD-100/xr Price on request U-T4WMT-2S Water Management, ethane - C20, cold trap Price on request 1970-0025-R O-RING, -025 BUNA-N, DURO 70 (GilAir-3/GilAir-5/BD Price on request