Tedlar PVF Gas Sampling Bags with PTFE straight On/Off valve, 2L Back Catalog number: HEDTDL31_2L Availability: In the manufacturer's stock Price on request - + Recommended HEDNDV31_25L New Devex Sampling Bag with PTFE Valve & Septum Fitting, 25L Price on request C-VAC-PIN Vacuum closure Pin Price on request U-COV1516 Spare O-ring, black, for POD sampler (support body), pk 10 Price on request