Analysis of coffee and coffee products; determination of particle size of ground roasted coffee, air-jet sieving method
standard by Deutsches Institut Fur Normung E.V. (German National Standard), 12/01/1975

Analysis of coffee and coffee products – Determination of particle size of ground roasted coffee – Air-jet sieving method
standard by Deutsches Institut Fur Normung E.V. (German National Standard), 07/01/2016