Pure 5.0 NH3 Calibration Gases is a reference gas or gas mixture and mixture gas used as comparative standard in the calibration of analytical instruments, like gas analysers gas or gas detector gas Therefore, a calibration gas has to be of a precisely defined nature or composition, like zero gas or span gas, for example 500 ppm carbon monoxide in nitrogen. To be a calibration gas, the gas must be traceable to a national or international standard. Traceability is the unbroken chain of comparisons to an acceptable international standard. The calibration gas standard establishes a known analyzer response to a certified chemical component concentration. In the calibration gas, preparation tolerance (PT) and certification/analytical accuracy (CA) are of utmost importance.
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