Comparing to commonly used three methods, Fehlings Reagent, Benedict Reagent and Tollens Reagent, the new reagent is convenient to prepare, storage and it still has the same result as it was prepared after three months; 与斐林试剂法、班氏试剂法和托伦试剂法等常用的鉴定方法相比较,所用的试剂易于配制、方便储存,放置3个月后仍然可以正常使用;