Dr. Carey Reams developed tests and remedies to diagnose and correct unhealthy body conditions. He called his program the Reams Biological Theory of Ionization (RBTI). Correcting pH is part of RBTI.
A.F. Beddoe continues the research of Dr. Reams. His book, The Calcium Kit, explains how to test your body’s pH and bring it into balance. An important part of correcting pH is taking the proper calcium supplements. If you are too acid, you would want to take an alkaline calcium like calcium carbonate. On the other hand, if your body is too alkaline, you would take an acid calcium like calcium lactate. The gluconate form of calcium is neutral. I test my pH with a Cardy Twin pH Meter because I found it very difficult to match colors with pH testing tapes.