分别用中控与国标两种方法对尿素成品缩二脲进行分析,对比两种方法精密度和准确度,分析结果无显著性差异,在成品中间控制分析中,该方法完全能满足分析要求。 The biuret products of urea were analyzed by two methods, ie central control and GB respectively. Comparing the precision and accuracy of the two methods, there was no significant difference between the two methods. In the intermediate control analysis of the finished product, this method can fully meet the analytical requirements.