the base reason is, i was thinking about creating a product that can do the chemical meassurement automated (micro camera, 2 glas slides, 1 motor for peristalstic pump, 2 inputs for the chemicals, esp32 for wifi and bluetooth access, tinyml to evaluate the value from the camera) .... product can be built for less than 50 bucks. Enough accuracy, but i dont know how many people would buy it....