Wsb-1 Portable Digital Whiteness Meter Leucometer White Meter Wb=r457 Mainly applied to the surface roughness of the non-color object or powder whiteness measurement , and can be obtained accurately coincide with the sensation of brightness values. For the opacity of the paper can be accurately measured . Can be widely used in textile, paint, chemicals, building materials , paper, cardboard , plastic products, white cement , ceramic, enamel , talc , starch , flour , salt , detergents, cosmetics and other whiteness measuring substances. Compact in appearance , light weight , AC-DC power supply, handheld use LCD display, low power configurations, low-voltage prompts, automatic power off function Special efficient long-life light source , 100,000 hours maintenance-free use Measurement data is stable and reproducible, small errors 30 seconds to warm up properly to work with a data output interface