Spare solid glass stopcock key, NS 14,5, 2pc/pk Back Catalog number: OST-227-3141 Availability: In the manufacturer's stock Price on request - + Recommended TDL71_10L Tedlar PVF Gas Sampling Bag with PP valve, 10L, 3/16'' OD (4.76mm) Price on request HEDDEV41_5L DEVEX sampling bags 5L, stopcock & septum Price on request U-COV07 O-Ring, low-emission, size007, pk 10 (TD autosampl Price on request