Polyester gas sampling bag with PTFE dual-valve, 2L Back Catalog number: POL32_2L Availability: In the manufacturer's stock Price on request - + Recommended SERZ-1076 Spare filter assembly, ACTI-VOC Price on request T-4ATX Air toxics cold trap, TT24-7 Price on request NDV32_5L New DEVEX gas sampling bags with PTFE dual-valve, 5L Price on request