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Round April 2026

Round April 2026 — Registration Deadline: 27/02/2026Despatch Samples: 16/03/2026 Reporting Deadline: 10/04/2026 Final Report: 27/04/2026

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Proficiency Testing (PT): Hidrocarbon oil index according to standard ISO 9377-2 (Round April 2026)
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Proficiency Testing (PT): Pesticides in natural waters (Round April 2026)
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Proficiency Testing (PT): Polycyclic Aromatic Hydrocarbons (PAHs) in natural waters (Round April 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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