MSA Calibration Testing Gas 10103262 (Each)CAL GAS 5GAS PENT STD 58%LEL, CO 60PPM, H2S 20PPM, CO2 2. 5%, O2 15% bal N2 58L Certified gas cylinders for calibration MSA offers a complete line of calibration gas cylinders to calibrate all instruments. The gas mixture in calibration gas cylinders is certified to be prepared gravimetrically, using NIST traceable weights. The lot number and nominal value of the gas constituents in volume, percent by mass, PPM, or volume is specified on the cylinder.
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