New DEVEX gas sampling bags with PTFE dual-valve, 2L Back Catalog number: HEDNDV32_2L Availability: In the manufacturer's stock Price on request - + Recommended TDL32_2L Tedlar PVF Gas Sampling Bag with PTFE dual-valve, 2L Price on request RMK-0020 Routine Maintenance Kit: Tube conditioner (TC-20) Price on request C-CL010 Penclips, pk10 Price on request