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 U-T13DHS-2S DHS application cold trap, UNITY 2/xr andTD-100/xr Price on request C-MCTEKIT-250 High Temperature MCTE Starter Kit Price on request P-00020 VOC-Mole assembly, 380mm,pk10 Price on request