Experimental device for laser method to measure solubility and super solubility

I am using this laser, but it doesn't seem to be easy to use!IntersectionIntersection

I have seen others have used it, and I really do n’t know the specific information. You can check it online.It should not be expensive, purple light, MS is old, and it is also connected to the printer.

The laser laser launcher of the Department of Physics at Peking University, emitted a laser wave length of 531nm;

Should it be called a laser turbidity meter?