GASCO Calibration Gas 33BD-17 / 50% LEL Methane / 100 ppm CO / 10 ppm SO2 / 17% Oxygen / Balance Nitrogen 

GASCO Calibration Gas also known as Cal Gas, is used for the Calibration and Maintenance of Gas Detectors and Sensors. All of our GASCO Calibration Gas Cylinders ship with a COA (Certificate of Analysis). GASCO Calibration Gas meets or exceeds the requirements of the Original Gas Detection Equipment Manufactures Specifications. GASCO Calibration Gas is National Institute of Standards and Technology (NIST) Traceable, Made in the USA, and produced using an ISO 9001:2008 certified process.