Has anyone tried using a setup of RGB LED directed to cuvette and the LDR on the opposite side? using arduino to and get the RGB values..

Currently having problems with calibration... I was able to get R,G,B values of colored papers... however with colored liquids inside a cuvette I'm not getting any good results (i.e the Red/Blue/Green values goes way up like 5000++)

Used white and black paper for callibration..

No idea for liquid...