Home / Standards / GB/T 9170-1988 GB/T 9170-1988 Active Lubricating oils and fueloils--Determination of total nitrogen--Modified Kjeldahl method 润滑油及燃料油中总氮含量测定法(改进的克氏法) Standard Type GBT ICS 75.080 CCS E34 Status 现行 Issue Date 1988-04-29 Implementation 1989-04-01 Responsible Dept 国家标准委 Drafting Unit N/A