Different concentrations of a set of alcohol solution were measured experimentally; the system measurement error is no more than 0.02 %.
对一组不同浓度的酒精溶液进行了测量实验，浓度测量绝对误差小于0.02%。
2
To the isopropyl alcohol this kind of substrate ingredient rich sample, the determination method using direct caused the result insufficiently to be ideal, and the remarkable system error.