I am a health inspector and my office is responsible for inspecting the general use pools in the area. My coworkers are often asked (and wonder themselves) what the difference is between the solid tablets that we use and the liquid indicators that some others use. They also have not been able to find information on how accurate the chemicals we use in our kits are. So my question is does anyone have specific technical knowledge on the interactions of the indicators with the pool chemicals and is there any research being done on the different sanitizers being used in pools? There are many webinars and seminars that are presented each year about how to test and what is being observed, but none actually have the research and science to backup their theories. Any help would be greatly appreciated.