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32-20 CO2 20% Hydrogen 80%

GASCO Specialty Calibration Gas Carbon Dioxode 20%, Balance Hydrogen 80% 

Our Calibration Gas also known as Cal Gas, is used for the calibration and maintenance of gas detectors. All of our Calibration Gas Cylinders ship with a COA (Certificate of Analysis). Our calibration gas is NIST Traceable, Made in the USA, and produced using an ISO9001:2008 certified process.