Certification & Accreditation

Certification & ISO 17025 accredited gases:

Certain applications require gases to the certified by an ISO17025 accredited laboratory, for example the QAL 2 gases used in Industrial Emissions Monitoring. Air Liquide supply a range of accredited gases across all the sectors we work in.

Contact Us for Further Information

ISO17025 accredited laboratories have demonstrated that they are technically proficient and able to produce precise and accurate test and calibration data. This is a voluntary, third party-reviewed process that ensures a laboratory’s quality management system is thoroughly evaluated on a regular basis to guarantee continued technical competence and compliance with the ISO 17025 standard.

Laboratory accreditation bodies use the standard specifically to assess factors such as:

  • Traceability of measurements and calibrations to international standards
  • Technical competence of staff
  • Maintenance of analytical equipment
  • Quality assurance of test and calibration data
  • Validity and appropriateness of test methods
  • Appropriate handling and transportation of samples
  • Quality of testing environment and sampling

Gases are supplied with different types of certificate. Our ALPHAGAZ™ range typical comes with a certificate of conformity (CoC), which is measured against a batch analysis,. The other type is a certificate of analysis (CoA). A CoA would usually accompany a gas mixture, with the certificate showing impurities, accuracy of the mixture and any traceability requirements. This includes our Engine Emission Testing dual-compliant gases.