DIN 55626-10
DIN 55626-10 Extenders and pigments for paper and board - Specifications and methods of test - Part 10: Natural talc chlorite in lamellar form
standard by Deutsches Institut Fur Normung E.V. (German National Standard), 07/01/2007
standard by Deutsches Institut Fur Normung E.V. (German National Standard), 07/01/2007