IIAE CONFERENCE SYSTEM, The 5th IIAE International Conference on Industrial Application Engineering 2017 (ICIAE2017)

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Handmade Light Absorbance Measurement Device by Using Cellophane as Filter for Educational Purpose
Soranut Kittipanyangam, Ponglert Rattanachinalai, Kanji Abe, Wanglok Do, Kei Eguchi

Last modified: 2017-02-21


In the science faculty of university, the device is not enough for every student. Therefore, this research aims to develop a light absorbance measurement device for chemical education. The students can learn about the light absorbance from the proposed device and create it. The creation is not too hard for ungraduated student. In light absorbance experiments, the kind of light is importance. To measure many solution, the proposed device must have many colors of light source. Then, the proposed device uses cellophanes as a filter for changing white light or visible light to monochromatic light. The white light consists of many color of light. When the light transmits the filter, the filter absorbs many color of light excepting filter color. Therefore, the 1 white power LED is enough for experiment. Furthermore, the color of light can be changed or mixed by color filters. To investigate properties of the proposed device, the result of it is compared with the result of the commercial spectrophotometer concerning coefficient of determination.


Light Absorbance; UV-spectrophotometer; Beer’s Law; Coefficient of Determination; Linear Regression

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