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Directive 2006/113/EC of the European Parliament and of the Council of 12 December 2006 on the quality required of shellfish waters (codified version) · European Union

6. Dissolved oxygen (Saturation %) ≥ 80 % ≥ 70 % (average value) Should an individual measurement indicate a value lower than 70 %, measurements shall be repeated An individual measurement may not indicate a value of less than 60 % unless there are no harmful consequences for the development of shellfish colonies Winkler's method Electrochemical method Monthly, with a minimum of one sample representative of low oxygen conditions on the day of sampling. However, where major daily variations are suspected, a minimum of two samples in one day shall be taken

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Source: EUR-Lex (Cellar) · retrieved 2026-10-22 · Text as adopted (Official Journal); later amendments are not incorporated in this text.