GB 9087-1988 "Powder Standard Whiteboard for Chroma and Photometric Measurement" standard specifies the requirements for the production and application of powder standard whiteboards for chroma and photometric measurement and calibration of working standards. Standard whiteboards are pressed from oxidation mg or barium sulfate powder to ensure that their Light spectrum reflection ratio is above 95% and keep the reflection ratio stable in the 380 to 780nm Wavelength range. A sample press that meets the requirements is required during the production process to ensure that the surface of the whiteboard is flat, Gloss-free and free of stains. Light spectrum photometers should be used for measurement, and the instruments are required to have high-precision and Stability. Light spectrum reflection and tristimulus values of the standard whiteboard are recorded to ensure Precision.
| Status | Abolish |
|---|---|
| CCS | ICS |
| Release Date | Implementation Date |