GASCO Specialty Calibration Gas 411x-10SO2-20.9 Mixture Oxygen 20.9%, Sulfur Dioxide SO2 10 PPM, Hydrogen Sulfide H2S 25 PPM, 25% LEL Pentane, Balance Nitrogen, Calibration Certificate NIST, Made in the USA

Our Specialty 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 Certificate of Analysis (COA). 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, GASCO Calibration Gas is Made in the USA, and produced using an ISO 9001:2008 certified process.