... contains fluorescent whitening agent and determination of reflectio Product introductionBrightness Meter is widely applied in papermaking, fabric, printing, plastic, ... not lost when the power is cut off.Product applicationBrightness Meter is widely applied in papermaking, fabric, printing, plastic, ... size: the test plane not less than φ30mm, the thickness of no more than 40 samples Power: AC 220V ± ...