... or liquid samples, others all can test, such as: powder, board, paper, paste, sheet, clay,etc.A & E Lab. Main Products ... measured the whiteness value of any substances. Such as: powder, board, paper, paste, sheet, clay, etc.² Chemical & Building materials industry: White ... & Weight405X325X330mm & 6.5kg Digital Whiteness Meter (0-100%,LED display, touch panel, test paper, rice, flour, powder, paste)