Home / Standards / GB/T 22259 GB/T 22259 Active Determination of oxytetracycline in feeds 饲料中土霉素的测定 Standard Type GBT ICS 65.120 CCS B46 Status 现行 Issue Date 2025-08-01 Implementation 2026-02-01 Responsible Dept 国家标准委 Drafting Unit 国家标准委