Home / Standards / GB/T 4945-2002 GB/T 4945-2002 Active Standard test method for acid and base number of petroleum products and lubricants by colour-indicator titration 石油产品和润滑剂酸值和碱值测定法(颜色指示剂法) Standard Type GBT ICS 75.080 CCS E30 Status 现行 Issue Date 2002-01-14 Implementation 2002-08-01 Responsible Dept 国家标准委 Drafting Unit N/A