PK Safety RAE Equivalent Carbon Monoxide Calibration Gas Mix 58 Liter contains 50 PPM CO Balance Air. This 58 Liter standard bump test and calibration gas is compatible with RAE calibration sensors, equipment and monitors (provided the monitor is setup accordingly). Gas monitors needs to be bump tested and calibrated regularly to make sure it is functioning properly. Made in the USA.
Note: This item ships via UPS Ground due to HazMat restrictions and isn't available for expedited shipping. Calibration gas is not returnable. Please check your selection carefully before ordering.