Overview
WSB digital display whiteness meter is a measuring instrument composed of Illuminant, filter, sample holder and photodetector, etc. The overall whiteness value is blue light whiteness R457. The instrument defines the ideal surface whiteness of 100 degrees when the light spectrum diffuse reflection ratio is 100%, and the absolute black surface whiteness of zero when the Light spectrum reflection diffuse ratio is zero. The instrument is designed in full accordance with Standard light source A and illumination conditions 45/0 stipulated by the International Commission on Illumination (CIE). Through strict testing and debugging, it complies with JJG512-2002 National Measurement verification regulations and implements a number of national standards.
Features
1. Use blue light whiteness R457 measurement to ensure consistent whiteness value with apparent Sensitivity
2. Basis Weight reflects the whiteness of the object treated by the Fluorescent Whitening Agent
3. Opacity measurement of paper
4. Design meets International Commission on Illumination Standard light source A and lighting conditions 45/0
5. Ensure measurement accuracy through strict testing and debugging
Principle
The instrument works based on the principle of Light spectrum diffuse reflection. Illuminant irradiates the sample, filters filtrate the rays of light of specific wavelengths, and photodetectors receive the reflected light signal, and finally calculates the whiteness value. Light spectrum diffuse reflection ratio is defined as 100% whiteness 100 degrees, Light spectrum diffuse reflection ratio is zero whiteness zero degrees, to achieve quantitative measurement of whiteness.
Applications
Spinning & weaving printing and dyeing, paints, chemical building materials, paper Cardboard, plastic products, white cement, ceramics, enamel, porcelain clay, powder tale, starch, flour, salt, detergent, cosmetics
Standards
JJG512-2002、GB/T 2913、GB/T 5950、GB 8940.1、GB 12097、GB 13025.2、ISO 2470
