The empirical tests described below determine the chalking and weathering differences between two pigments, but do not always give the true differences. Other test methods have therefore been developed, e. g., determination of mass losses on weathering (gravimetric test) [1.65].
Weather Resistance
3 сентября, 2015 
Pokraskin 
Опубликовано в рубрике Industrial Inorganic Pigments