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 NDV32_2L New DEVEX gas sampling bags with PTFE dual-valve, 2L Price on request U-T19PAH-2S PAH cold trap, UNITY 2/xr and TD-100/xr Price on request C-CL100 Penclips, pk100 Price on request