GB/T 40969-2021 stipulates the method for measuring paper and Cardboard Color by D50/2 ° diffuse reflection method. The standard specifies the scope of application and measurement principle, specifies the equipment, sample prepative, measurement procedure, etc., and standardizes the calculation and representation of Color measurement results. It provides a unified standard for scientific and accurate evaluation of paper and Cardboard Color characteristics, and helps product mass control and Appearance detection.
This summary is not the original standard text and is for reference only. For accurate information, please obtain it through official channels.
| Status | Active | ||
|---|---|---|---|
| CCS | Y 30 | ICS | 85.060 |
| Release Date | 2021-11-26 00:00:00 | Implementation Date | 2022-06-01 00:00:00 |