UV/VIS Spectrophotometer

In 1941, Beckman Instruments Inc. launched the first commercial UV-visible spectrophotometer in the world, DU UV-Vis Spectrophotometer. This spectrophotometer can shorten the measurement which takes several hours or even days, which was in the past. Although the modern UV-Vis spectrophotometer has been quite different then this historical one, however, the basic principle of operation is very much similar. It measures the light flux difference before and after passing the sample, according to the amount of the light is absorbed by the liquid sample, one can measure characteristics of the sample.

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