Tedlar PVF Gas Sampling Bags with PTFE straight On/Off valve, 2L Back Catalog number: TDL31_2L Availability: In the manufacturer's stock Price on request - + Recommended POL32_5L Polyester gas sampling bag with PTFE dual-valve, 5L Price on request U-T7EMP-2S Empty cold trap for UNITY series 2 Price on request C-HSPVLP-6 HiSorb Septum Plug, pk 6 Price on request