Auto swimming pool PH and chlorine tester

This automatic mechanical PH or chlorine swimming pool water quality tester worked quite well in the lab tests. 3 weeks of work for 2 people lifted the project to an adequate level. There are alternatives out there for chemical testing, but this is a mechanising of a human process.

The process is as follows

  1. The pool water is pumped into the vile,
  2. The testing tablet is then dropped into the vile
  3. The magnetic agitator agitates the solution which changes colour
  4. The light sensor senses the opacity of the solution colour
  5. The vile rotates upside down to empty the solution
  6. The vole is flushed with fresh water
  7. Process is ready for the next test.