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PK Safety BW Equivalent 4 Gas Calibration Gas Mix 34 Liter contains Methane, Oxygen, Hydrogen Sulfide, Carbon Monoxide in balance Nitrogen. This 34 Liter standard bump test and calibration gas is fully compatible with 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.
Compatible with the Following Monitors:
FAQs: How Often Do I Need To Calibrate My Monitor?
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.