DB22/T 1995-2014
GB/T 8654.1-2007
Manganese metal, ferromanganese - silicon, ferromanganese and nitrogen - bearing ferromanganese - Determination of iron content - The ortho - phenanthrdine spectrophotometric method and the titanium trichloride - potassium dichromate titrimetric method
DIN CEN/TS 17761
Inorganic fertilizers - Determination of the chloride content in ammonium nitrate fertilizers of high nitrogen content; German version CEN/TS 17761:2022