M00001240
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ISO 7497:1984 Fertilizers - Extraction of phosphates soluble in mineral acids
standard by International Organization for Standardization, 11/01/1984
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Availability date: 2021-11-25
Specifies two equivalent methodes. They consist in dissolving the wanted substance in a mixture of hydrochloric and nitric acids or in a mixture of sulfuric and nitric acids.