Home / Standards / GB/T 21878-2025 GB/T 21878-2025 Active Water-soluble dyes—Determination of shade and spectrostrength 水溶性染料 色光和分光强度的测定 Standard Type GBT ICS 71.100.01;87.060.10 CCS G55 Status 现行 Issue Date 2025-08-29 Implementation 2026-03-01 Responsible Dept 中国石油和化学工业联合会 Drafting Unit N/A