din en 172042020

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European Standards is an eion of requirements for products, processes or services to meet the requirement of fitness for a particular purpose. EN Standards have got a positive impact on facilitating the free movement of goods in international trade, seeking to rationalize production, helps to promote environmental protection and

DIN EN 17204:2020 - Water quality - Guidance on analysis

DIN EN 17204:2020 Water quality - Guidance on analysis of mesozooplankton from marine and brackish waters; German version EN 17204:2019. This document specifies a procedure for analysing mesozooplankton in marine and brackish waters. The procedures comprise how to identify and enumerate zooplankton to estimate quantitative information on

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