PROCERTUS is pleased to invite you to participate in the 2026 edition of the Interlaboratory Comparison on lime.

By participating in this campaign, you will:

• Evaluate and monitor your laboratory’s performance;
• Benchmark your results against those of a number of specialized laboratories;
• Identify deviations or areas for improvement in your testing processes.

Your participation offers a valuable tool for quality management in your laboratory. We strongly encourage you to make the most of the insights this campaign can provide.

This campaign is open to all laboratories performing standardized lime testing, including:

• Independent testing laboratories
• Laboratories from lime producers
• Laboratories from research or academic institutions

• Gain objective insight into your lab’s performance
• Strengthen your quality assurance processes
• Demonstrate competence to clients and accreditation bodies (e.g. ISO/IEC 17025)
• Be part of a recognized international benchmarking effort

• Focus of this campaign: Two quicklime samples (CL XX-Q) with different reactivities
• Sample shipping: Test samples will be dispatched before the campaign starts.
• Languages: All communication and reports will be in English and French
• Confidentiality: All results are handled with the utmost confidentiality. In the reports, laboratories will be represented anonymously.
• Standards used: This Interlaboratory Comparison covers lime testing according to European standards (EN 459-2) or – where applicable – equivalent validated methods. A detailed protocol will be provided after registration.

Should you require any additional information regarding the Interlaboratory Comparison – Lime 2026, please do not hesitate to contact us at: interlab.lime@procertus.be