Quality Calibration Gases Categories

While preparing calibration gas mixtures, two types of measurements are made –

• volumetric or gravimetric measurement - measuring what goes into the cylinder; requires a calibrated pressure or flow device (volumetric) or a calibrated balance (gravimetric)

• measurement based on analysis - measuring what comes out of the cylinder; requires a gas analyzer and several reference gas mixtures

High quality gas mixtures are manufactured gravimetrically and analyzed with an accredited process, outlined on the cylinder certificate.

Specialty gas mixtures are also classified into one of the following categories, based on how they are made, tested, analyzed, or certified.

Traceable Gas Mixtures

Traceable mixtures are those gas mixtures that have been manufactured using traceable weights and measures. In other words, regardless of the method is used to manufacture the mixture, the instrumentation had undergone a traceable calibration. 

Certified Gas Mixtures

Certified mixtures are the ones that are manufactured, analyzed or tested by specific, documented methods and come with a certificate stating the method(s) used. 

Accredited Gas Mixtures

Accredited mixtures are produced or calibrated within the scope of an accredited organization. Accreditation shows the manufacturer' technical capability in measurement, thoroughly assessed by the relevant national testing authority and accepted globally. 

If you are looking for gas detectors repair or calibration gas suppliers in Houston, TX, talk to Green Light Safety at 832-262-9931 right away. With over 15 years’ experience in this industry, Green Light Safety specializes in rentals, sales and service of Gas Detection equipment as well as calibration of the equipment. 


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