Almost all examples of such devices have the same operating setup. Firstly the user has to point optical unit to the media, which is part of electronic system. Optical system sends infrared light to the detector that receives a specific infrared spectrum. Data is sent to the device where we can analyze the obtained results. Results are drawn in Scilab and signals are compared to each other. The analysis is called attenuated total reflection. The obtained results show that different samples of ingredients can be detected at certain accuracy and also we can see that they are different from each other
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