DIN 52007-2
DIN 52007-2 Bitumen and bituminous binders - Determination of viscosity - Part 2: Measurement by drawn-sphere viscometer
standard by Deutsches Institut Fur Normung E.V. (German National Standard), 10/01/2013
standard by Deutsches Institut Fur Normung E.V. (German National Standard), 10/01/2013