How to test the whiteness of laundry gel beads?

How to test the whiteness of laundry gel beads? The whiteness of the laundry beads is the apparent characteristic of the laundry beads, which refers to the ratio of the surface of the laundry beads to the diffusely reflected radiant energy of the fully reflective diffusion surface in the visible light region, that is, the degree of whiteness is called the whiteness. The whiteness meter can be used to measure the whiteness of the laundry gel beads with a spectrophotometer, a color difference meter or an instrument that can give the tristimulus values u200bu200bX, Y, Z and conform to the ZB N33012 'Whiteness Meter'.
The instrument used to test the whiteness of laundry gel beads should meet the following conditions. The optical geometric conditions of the instrument can be vertical illumination diffuse detection (0/d), diffuse illumination vertical detection (d/0), vertical illumination 45 , Detection (0/45), 45, illuminate any one of vertical detection (45/0). The light source of the instrument should be D65 or analog D65 light source, and the reading degree of the instrument should reach 1 decimal place. The stability, repeatability and indication error of the instrument should conform to ZB N33012 'Whiteness Meter' or JJG 512 'Whiteness Meter Calibration Regulations' The requirements of Grade 2 or above in the Classification Index.




Related Products