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Fertilizers. Extraction of phosphorus soluble in Joulie´s alcaline ammonium citrate. Original standard BS EN 15923-2011 in PDF full version. Additional info + preview on request

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Fertilizers. Determination of the fineness of grinding of soft natural phosphates. Original standard BS EN 15924-2011 in PDF full version. Additional info + preview on request

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Fertilizers. Extraction of total sulfur present in various forms. Original standard BS EN 15925-2011 in PDF full version. Additional info + preview on request

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Fertilizers. Extraction of water soluble sulfur where the sulfur is in various forms. Original standard BS EN 15926-2011 in PDF full version. Additional info + preview on request

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Services offered by hearing aid professionals. Original standard BS EN 15927-2010 in PDF full version. Additional info + preview on request

Document status: Withdrawn

Fertilizers. Determination of the fineness of grinding (dry procedure). Original standard BS EN 15928-2010 in PDF full version. Additional info + preview on request

Document status: Active