GASCO 58es-421 Carbon Monoxide 100 PPM, Methane 50% LEL, Hydrogen Sulfide 25 PPM, Oxygen 18% in Nitrogen contained in a 58 ecosmart Factory Refillable Aluminum Cylinder, For Use with Any and All Gas Detectors, Cylinder connection CGA C10, Calibration Certificate NIST, Made in the USA

GASCO 58es-421 Calibration Detection 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.