Бумага и картон. Измерение коэффициента диффузного отражения в голубом свете(степень белизны по ISO)
Название (англ.):
Paper and board; Measurement of diffuse blue reflectance factor (ISO brightness)
Описание (англ.):
Is condined to white and near-white papers and boards. Paper or board treated with fluoroscent dyestuff or exhibiting significant flouroscence may be measured, but the agreement between values obtained with different instruments may by unsatisfactory and assessing the results may by difficult.