Some commercial laboratories use periodic nitrate nitrogen tests as guides. 許多商業性的試驗室已應用定期的硝態氮分析作為指導。
The method based on microliter sample dilution was applied to monitoring of ammonium nitrogen in fermentation solutions. 把微升進樣在線稀釋技術同氣體擴散光度法結合,測定了農藥發酵液中氨態氮的含量。