GB/T 21881-2015 "Acid Dyes — Determination of Levelness" is applicable to the determination of the leveling properties of acid dyes on protein fibers such as wool and silk. The dyeing process is controlled using a dyeing machine, and after dyeing the fabric, the color difference values of different areas of the fabric are measured using a spectrophotometer. Alternatively, visual assessment is combined, and the levelness is graded according to standard levels. Key conditions such as the dyeing bath ratio and heating rate are specified to ensure the reliability of the evaluation results.
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 | 2015-05-15 00:00:00 | Implementation Date | 2015-12-01 00:00:00 |
