Calibration gases: gas mixture categorization and customized precision

Depending on the measurement accuracy requirements, we offer different categories of calibration gases, which are specified by tolerance, uncertainty, and stability duration:

• Tecline gas mixtures:
  for applications with lower precision requirements (tolerance 2-10%).
• Labline gas mixtures:
  suitable for most measurement applications with a tolerance of ±5%.
• Topline gas mixtures:
  for applications requiring the highest accuracy (tolerance < 1%).
• Traceline gas mixtures:
  for measuring trace gases, e.g., in environmental analysis (concentration 5–1000 ppb).
• Longlife option:
  for applications requiring extended stability of calibration gases (24-36-60 months).

Accredited calibration gases – highest quality and reliability

Messer offers accredited calibration gases for applications that place the highest metrological demands. These calibration gases meet the requirements of the international standards ISO 17025 and ISO 17034. These accreditations guarantee that Messer's calibration gases meet the highest metrological standards and are suitable for both industrial and scientific applications.

The accreditation ensures that Messer, as a manufacturer of calibration gases, is able to supply certified reference materials (CRMs) with precise concentrations and maximum traceability in accordance with metrological quality standards. These calibration gases are used in particular in laboratories that are subject to the quality management guidelines of GMP or ISO 17025.

Detailed certificates of analysis for calibration gases

Every calibration gas from Messer is supplied with a detailed certificate of analysis in accordance with EN ISO 6141. The certificate includes:

• Actual composition of the gas mixture
• Measurement uncertainty and relative tolerance
• Stability data and shelf life of the gas mixture
• Further technical specifications regarding conformity and measurement accuracy

We also offer more detailed certificates of analysis as an option, which show the specific actual values of the components and their uncertainty range.

Applications of calibration gases

Calibration gases are required in a wide range of applications, including:

• Gas warning systems:
  calibration of gas sensors for monitoring hazardous gases in industrial plants or in occupational safety.
• Emissions and environmental monitoring:
  analysis of the concentration of pollutants in exhaust gases or environmental systems using calibration gases.
• Medical analyzers:
  calibration of blood gas analyzers for precise measurements in clinical diagnostics.
• Research and development:
  provision of precise calibration gases for scientific investigations requiring accurate concentrations of high-purity or mixed gases.

Reliable gas supply systems for calibration gases

For the precise extraction of calibration gases, it is crucial that all factors which could alter the gas composition are excluded. Therefore, Messer offers specially developed pressure reducers and gas supply systems that ensure the quality of the calibration gases during withdrawal. These systems guarantee that the gas mixtures are supplied to the analyzer reliably and under optimal conditions.