DIN 53770-11
DIN 53770-11 Pigments and extenders - Determination of matter soluble in hydrochloric acid - Part 11: Manganese content
standard by Deutsches Institut Fur Normung E.V. (German National Standard), 09/01/2007
standard by Deutsches Institut Fur Normung E.V. (German National Standard), 09/01/2007