This standard specifies two methods for determining the color shade and strength of acid dyes: the dyeing method, which applies to dyes used for textile dyeing, and the solution colorimetry method, which applies to dyes in high-purity or daily chemical applications. Regardless of the method used, the core instrument—a spectrophotometer (or colorimeter)—is ultimately required to objectively evaluate the dye's performance. The instrument measures the reflectance or transmittance of the sample within the visible light spectrum and calculates the K/S value (indicating color depth and saturation), CIE Lab values, and the final color shade and strength values. This testing is a critical step in dye quality control.
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 | 71.100.01;87.060.10 |
| Release Date | 2025-08-29 00:00:00 | Implementation Date | 2026-03-01 00:00:00 |
