Home / Standards / GB/T 42955-2023 GB/T 42955-2023 Active Determination of total nitrogen content for fertilizers—Dumas combustion method 肥料中总氮含量的测定 杜马斯燃烧法 Standard Type GBT ICS 65.080 CCS G20 Status 现行 Issue Date 2023-08-06 Implementation 2024-03-01 Responsible Dept 中国石油和化学工业联合会 Drafting Unit N/A