EQA-Schemes are a central component of external quality assurance and serve as proof of a laboratory’s technical expertise.

Important reasons for participation are

• Objective evaluation of own measurement results
• Comparison with other laboratories at national and international level
• Early detection of deviations and systematic errors
• Fulfilment of requirements from standards and accreditations (e.g. ISO/IEC 17025)
• Proof of reliability to customers, authorities and auditors

EQA-Schemes ensure long-term measurement quality and promote continuous improvement.