GB/T 6688-2008 "Dyes - Determination of relative strength and colour differences - Instrumental method" integrates and replaces two previous standards. It specifies the instrumental method for determining the relative strength and colour differences of non-fluorescent dyes applied to textiles. Measurements are taken within the wavelength range of 400–700 nm using a compliant reflectance spectrophotometer, and results are calculated using the CMC (l:c) colour difference formula. The testing requires equipment such as a spectrophotometer, standard illuminants, and dyeing apparatus, providing a unified standard for quality control of dye colouring power and colour consistency.
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 | G55 | ICS | 87.060.10;71.100.01 |
| Release Date | 2008-09-18 00:00:00 | Implementation Date | 2009-05-01 00:00:00 |