Polyester gas sampling bag with PTFE dual-valve, 5L Back Catalog number: POL32_5L Availability: In the manufacturer's stock Price on request - + Recommended DEV31_5L DEVEX gas sampling bag, stopcock straight valve, 5L Price on request U-T18325-2S EPA 325 cold trap, UNITY 2/xr and TD-100/xr Price on request M-MCAL50 Disposable dish, alum, 50mL,pk100 Price on request