Digestion of the cheese by sulfuric acid and hydrogen peroxide. Formation of molybdenum blue by addition of molybdate asorbic acid solution. Spectrometric measurement at a wavelength of 820 nm of blue color formed.
DIN 10324:1990 history
1990DIN 10324:1990-12 Determination of the total phosphorus content of cheese and processed cheese; spectrometric method
1990DIN 10324:1990 Determination of the total phosphorus content of cheese and processed cheese; spectrometric method