Tedlar PVF Gas Sampling Bag with PP valve, 5L, 3/16'' OD (4.76mm) Back Catalog number: TDL71_5L Availability: In the manufacturer's stock Price on request - + Recommended U-T20PAM-2S Focusing trap, Photochemical Assessment Monitoring Stations (PAMS), for UNITY-xr, TD100-xr, Centri Price on request P-CP020 O-Rings, 23mm × 3mm i.d.,pk 20 Price on request P-CPS20 Dowty seals, for VOC-Mole cap assembly,pk 20 Price on request