Home / Standards / GB/T 21033-2025 GB/T 21033-2025 Upcoming Determination of immunoglobulin IgG in feeds—High performance liquid chromatography 饲料中免疫球蛋白IgG的测定 高效液相色谱法 Standard Type GBT ICS 65.120 CCS B 46 Status 即将实施 Issue Date 2025-12-31 Implementation 2026-07-01 Responsible Dept 国家标准委 Drafting Unit N/A