New Devex Sampling Bag with PTFE Valve & Septum Fitting, 25L Back Catalog number: HEDNDV31_25L Availability: In the manufacturer's stock Price on request - + Recommended U-COV45 O-Ring, low-emission, 5.92mm i.d. pk10 (6mm Difflo Price on request HEDTDL31_2L Tedlar PVF Gas Sampling Bags with PTFE straight On/Off valve, 2L Price on request U-T10CW-2S Chemical Warfare agents cold trap Price on request