New DEVEX gas sampling bags with PTFE dual-valve, 5L Back Catalog number: NDV32_5L Availability: In the manufacturer's stock Price on request - + Recommended TDL31_5L Tedlar PVF Gas Sampling Bags with PTFE straight On/Off valve, 5L Price on request DEV31_5L DEVEX gas sampling bag, stopcock straight valve, 5L Price on request SERLFP-5003 Spare back pressure adapter, ACTI-VOC Price on request