ISO 7497 : 1984(R2017)现行
FERTILIZERS - EXTRACTION OF PHOSPHATES SOLUBLE IN MINERAL ACIDS
出版：International Organization for Standardization
专家解读视频
Gives two equivalent methods. They consist in dissolving the wanted substance in a mixture of hydrochloric and nitric acids or in a mixture of sulfuric and nitric acids.
IS 6092 : Part 3 : Sec 5 : 2004(R2016) - Identical
BIS IS 6092-3-5 : 2004(R2006) - Identical
IS 6092 : Part 3 : Sec 5 : 2004(R2016) - Identical
BIS IS 6092-3-5 : 2004(R2006) - Identical
BS 5551-4.2.2(1987) : 1987 - Similar to
