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Petroleum products - Determination of the filterability of lubricating oils - Part 1: Procedure for oils in the presence of water

Electrical apparatus for use in the presence of combustible dust - Part 11: Protection by intrinsic safety "iD" (IEC 61241-11:2005 + Corrigendum February 2006)

Inorganic fertilizers - Determination of nutrient polymers nitrogen in the presence of other nitrogenous forms; German and English version prEN 18103:2024

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