Metrological gas mixtures, what they are and how they are used for instrument calibration

In industrial metrology, accurate calibration of measuring instruments is an essential aspect of obtaining reliable results.
Gas mixtures assume a key-role in the calibration process of the sensors of analyzers and gas chromatographs.

Focus on metrological gas mixtures

The certified values of these mixtures are referable to international standards. 

A wide range of analytes must be considered since metrological mixtures are called upon to meet the calibration needs of different measuring instruments.

Calibration of measuring instruments through metrological gas mixtures

On a practical level, mixtures are used to test the response of instruments against standards with known concentrations and thus allow correlation between instrument response and mixture concentration.

Scope of application of metrological gas mixtures 

Metrological gas mixtures find application in several areas where accurate gas measurement is critical, among them:

• Environmental
• Automotive
• Forensic
• Energy
• Petrochemical

Metrological gas mixtures: relevant aspects in supplier selection

Those listed are just some of the main application areas for metrological gas mixtures. 

It should be remembered that, more generally, using accredited and metrological mixtures is critical to ensuring accurate and internationally recognized measurements. Metrological mixtures provide robustness to the measurements and, consequently, the entire decision-making process.

In this regard, Perfecta is the SIAD brand that identifies internationally reportable metrology mixtures calibrated or produced by ISO 17025 or ISO 17034.

SIAD represents one of Italy's leading chemical groups, a leader in production and marketing of the full range of industrial, speciality, and medical gases and related services, with a remarkably varied business that extends to sectors in synergy with that of gases.

Why choose Perfecta metrological gas mixtures 

The SIAD Research Laboratory obtained accreditation as LAT Calibration Center No. 143 in 2001 and is also accredited as RMP Reference Materials Manufacturer No. 143.

The mixtures produced by the RMP Manufacturer and the calibrations performed by the LAT Center are referable to national and international samples of International System of Units (SI) units according to the following specifications:

• Mass samples calibrated by a Primary Metrological Institute or Accredited Center are used for the gravimetric preparation of mixtures.
• Mixtures certified by a Primary Metrological Institute.
• Mixtures produced by the Manufacturer or calibrated by the Center itself that are the internal reportable standards.