Home / Standards / GB/T 17819-1999 GB/T 17819-1999 Abolished Determination of vitamin B12 in vitamins premix--High-pressure liquid chromatography 维生素预混料中维生素B12的测定 高效液相色谱法 Standard Type GBT ICS 65.120 CCS B46 Status 废止 Issue Date 1999-08-10 Implementation 2000-02-01 Responsible Dept 国家标准委 Drafting Unit N/A