GOST 9 Aqueous ammonia for industrial use. Specifications
ISO 10540-1:2003 Animal and vegetable fats and oils - Determination of phosphorus content - Part 1: Colorimetric method
ISO 10540-2:2003 Animal and vegetable fats and oils - Determination of phosphorus content - Part 2: Method using graphite furnace atomic absorption spectrometry
GOST 31753-2012 history
2012GOST 31753-2012 Vegetable oils. Methods for determination of phosphorated substances