This paper analysed the reason for the breakdown of unstable absorbance reading of ultra - vis spectrophotometer in operation and suggested a method to eliminate it with illustration of examples.

• 本文对可见一紫外分光光度计在使用过程中出现的吸光度读数不稳的故障原因进行了分析,结合实例提出了排除这一故障的方法。