Tedlar PVF Gas Sampling Bags with PTFE straight On/Off valve, 5L Back Catalog number: TDL31_5L Availability: In the manufacturer's stock Price on request - + Recommended H1-AXABC HiSorb probe, inert, short, pk/6 Price on request U-T22117-2S Focusing trap, China Air 117, for for UNITY-xr, TD100-xr, Centri Price on request U-T2GPH-2S UNITY 2 & TD-100 Cold trap general purpose hydrop Price on request