凯氏定氮仪在测定肥料氮时应注意操作步骤的规范性,该操作不需复杂仪器设备,但操作手续每一步都影响化验结果。整个分析过程分为3步,即消化、蒸馏、滴定,每一步骤都要认真操作,以减少各步骤的操作误差,提高检测结果的准确度,以便对所检测样品做出正确检测结论。 Kjeldahl nitrogen analyzer in the determination of fertilizer nitrogen should pay attention to the normative nature of the steps, the operation does not require complex equipment, but the operation procedures every step of the test results. The entire analysis process is divided into three steps, namely, digestion, distillation, titration, each step should be carefully operated to reduce the operational error of each step to improve the accuracy of test results in order to make the correct detection of the test sample conclusions.