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 H4-AXAAC HiSorb probe, DVB/CWR/PDMS, inert, standard length, pk 6 Price on request RMK-0020 Routine Maintenance Kit: Tube conditioner (TC-20) Price on request U-T18325-2S EPA 325 cold trap, UNITY 2/xr and TD-100/xr Price on request