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Round May 2026

Round May 2026 — Registration Deadline: 24/04/2026Despatch Samples: 11/05/2026 Reporting Deadline: 05/06/2026 Final Report: 22/06/2026

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Proficiency Testing (PT): Chemical parameters in natural waters (Round May 2026)
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Proficiency Testing (PT): Chemical parameters in wastewater (Round May 2026)
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Proficiency Testing 2026

Round February 2026
Round March 2026
Round April 2026
Round May 2026
Round September 2026
Round October 2026
Round November 2026

Proficiency Testing Categories

Chemical parameters (Major Components)
EN 12457-2 & ISO 9377-2
Metals (Trace elements)
Organic compounds
Microbiology parameters

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