Accredited Proficiency Testing Service Phytoplankton

EQAT Phytoplankton - Proficiency tests for phytoplankton analysis

The Landestalsperrenverwaltung (LTV) of the Free State of Saxony has been conducting proficiency tests for phytoplankton analysis since 2007. The LTV is a provider accredited according to DIN EN ISO/IEC 17043 and DIN EN ISO/IEC 17025 guidelines. Proficiency tests are used to check the quality and suitability of laboratories within the framework of external quality assurance.

In our proficiency tests, the participating laboratories receive identical samples that have to be analysed according to predefined criteria. The reference counting chamber, that is developed by EQAT Phytoplankton, helps to distinguish systematic errors from errors related to the detection of algae. The participants' results are evaluated by the experts of the LTV using standardised statistical procedures, and terminates with the dispatch of a certificate and result sheets. Proficiency tests are thus of central importance in the quality management of the participating laboratories. Laboratories from all over Europe take part in our tests.

Current inter-laboratory tests

Identify analytical deficits and increase the performance of your laboratory based on established criteria.

Proficiency test phytoplankton 2023

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Proficiency test

Since 2002, the proficiency test phytoplankton has been carried out on an international level by the LTV.

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Database of phytoplankton images

With the help of our extensive and constantly growing image database, we provide you a helpful tool for the determination of phytoplankton. Disclaimer: this database is open for everyone and we therefore provide no warranty for correct determinations.

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Geometric formula

With the EQAT formula database, we offer you a collection of mathematical formula to describe and calculate the biovolume of a phytoplankter.

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EQAT Phytoplankton is a joint activity of the Landestalsperrenverwaltung des Freistaates Sachsen (LTV) and the Arbeitsgemeinschaft Trinkwassertalsperren e.V. (ATT). The proficiency tests are conducted at the LTV laboratory in Plauen. The quality management system of our laboratory was successfully audited by the German Accreditation Body Berlin on the basis of DIN EN ISO/IEC 17025: 2018. The counting of phytoplankton according to DIN EN 15204: 2006 is part of this accreditation.