WSB-1Digital display whiteness meter is mainly applied to white or almost white whiteness measurement on the surface of the object or powder. Can be accurately obtained is consistent with the visual sensitivity of whiteness value. For paper opacity can be measured accurately.The instrument can be widely used in textile printing and dyeing, paint coating, chemical building materials, paper, cardboard, plastic, white cement, ceramic, enamel, porcelain clay, talc powder, starch, wheat flour, salt, detergent, cosmetics and other objects of whiteness measurement. ▲Measuring range: 0 to 199 ▲Whiteness formula: blue whiteness WB = R457 ▲Source: LED light source ▲According to test conditions: compliance with GB / T3978 ▲provisions :45/0 ▲Display: LCD liquid crystal display ▲Measurement Aperture: 16 ▲Minimum Indication: 0.1 ▲Measurement repeatability: 0.2 ▲Indication error: ≤ ± 1 ▲Environment: temperature (5 ~ 35 ); humidity (≤85% RH) ▲Transportation, storage environment: temperature (-20 ~ 50 ); humidity (≤90% RH) ▲Power supply: DC 1.5V × 5 AA alkaline batteries (not included);