GB/T 21245-2007 "Paper and board - Determination of colour (C/2° diffuse reflectance method)" is identical to ISO 5631:2000. It specifies the method for determining the colour of paper and board using the diffuse reflectance method with gloss excluded. This standard is not applicable to paper and board colored with fluorescent dyes or pigments, but may be used under specific conditions for materials containing fluorescent whitening agents. It clearly defines instrument requirements, sample handling, and the calculation of colour parameters to ensure consistency in colour measurement.
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 | Y30 | ICS | 85-010 |
| Release Date | 2007-12-05 00:00:00 | Implementation Date | 2008-09-01 00:00:00 |
