... the machining precision SpecificationsWhiteness meter except solution or liquid samples, others all can test, such as: powder, board, paper, paste, sheet, clay ... d/0 as a illumination condition. Meanwhile, except solution or liquid samples, this instrument can be widely measured the whiteness value ... 5kg Digital Whiteness Meter (0-100%,LED display, touch panel, test paper, rice, flour, powder, paste)