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 M-MCHOR O-Ring, micro-chamber pan seal, for M-CTE120I,pk 6 Price on request U-COV450 O-Rings, low-emission,pk100 Price on request 1230 BALLOONS FOR GAS SAMPLING, 1Liter Price on request