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PK Safety MSA Equivalent 4 Gas Calibration Gas Mix 34 Liter contains 60PPM CO/1.45% CH4/20PPM H2S/15% O2 bal N2. This 34 Liter standard bump test and calibration gas is compatible with MSA calibration sensors, equipment like the the Altair 4XR and 5X gas 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.