Tedlar® PVF Sampling Bags PTFE On/Off valve, 1,6L Back Catalog number: HEDTDLC31Z_1.6L Availability: In the manufacturer's stock Price on request - + Recommended HEDDEV71_10L Devex Gas sampling bags 10L, PP screw cap valve, 3/16'' OD (4.76mm) Price on request OST-201-0246 Screw caps for screwthread tubes GL14, bore 8mm Price on request HEDNDV61_25L New Devex Sampling Bag with ABS Valve & Septum Fitting, 25L Price on request