MSA SAFETY SALES, LLC 710566 GAS CAL BD-20 LEL O2 CO-H2S 2200PSI

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.