instead of undergoing a rigorous process of using a spectrometer to detect a color change in a reaction between chemical substances. which sensor can fit in to replace the spectrometer?
For just a color change, maybe simply with a color camera along with a well controlled white light source. Or a black&white camera or a simple photodiode along with monochromatic illumination with well choosen wavelenghts usind LEDs....
A lot of people are trying to utilize cell phone cameras for colorimetric sensing now, but you have to be very careful, since every cell phone camera is different
Dear Friend Oke,
Colorimeters cab be the best and low-cost alternatives to a sprectophotometer if you want to monitor the change of color in a solution. However, as Brunel has said, a simple photo-diode based electronics with "proper" light source can also be a solution to your requirements. You can contact me if you want more details.
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