Two groups of sample weighed about 0.5 and 1 grams respectively were determined using this method,there are no obvious differences between the mean values of these two groups,the precision of the method is 0.008%.

• 用确定了的操作方法实际测定了称样量分别为0.；5g和1g两组样品；测定结果的平均值之间无明显差异；测定方法的精度为0