Multi-layer gas sampling bags, PP valve (4.76mm), 1L Back Catalog number: MBT71_1L Availability: In the manufacturer's stock Price on request - + Recommended M-DSK15-120 Spacer disc, alum, 1.5mm, for M-CTE120I,pk 24 Price on request DEV31_5L DEVEX gas sampling bag, stopcock straight valve, 5L Price on request NDV61_25L New Devex Sampling Bag with ABS Valve & Septum Fitting, 25L Price on request