Russian standards PDF

Fertilizers. Extraction of soluble phosphorus according to Petermann at ambient temperature

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Fertilizers. Extraction of phosphorus soluble in ammonium citrate alkaline solution

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Fertilizers. Determination of extracted phosphorous

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Fertilizers. Determination of 1H-1,2,4-triazole in urea and in fertilizers containing urea by high-performance liquid chromatography method

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Fertilizers. Extraction and determination of elemental sulfur

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Thermal insulating products for building applications. Method for determination of dimensional stability under specified temperature and humidity conditions

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