... liquid samples, others all can test, such as: powder, board, paper, paste, sheet, clay,etc.A & E Lab. Main Products: Atomic Absorption ... light source (R457) and with 0/d or d/0 as a illumination condition. Meanwhile, except solution or liquid samples, this instrument ... be widely measured the whiteness value of any substances. Such as: powder, board, paper, paste, sheet, clay, etc.² Chemical & Building ...