Biosystems 54-9051 equivalent by GASCO Ammonia (NH3) 50 PPM Balance Nitrogen Calibration Gas contained in a 58 Liter Aluminum Cylinder, Cylinder connection C-10 5/8"-18 UNF, Calibration Certificate NIST, NH3 50 ppm/ Nitrogen BIO Equivalent 54-9051 58 Liter Cylinder is Made in the USA

Our Precision 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.