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  TOOLS FOR MEASURING pH    
    pH paper and digital pH meters can be useful for measuring the pH of urine and saliva as recommended by Edgar Cayce.  The following companies sell instruments for measuring pH.
 

• pH Paper - pH paper is a simple and relatively inexpensive tool for measuring pH.  Here is a source for pH paper:

            Baar Products
            P.O. Box 60
            Downingtown, PA  19335
            Telephone (800) 269-2502
            

• pH Meter - Meridian Institute used the "ph Tester 2" digital pH meter sold by Davis Instruments in research projects.  The catalog number for this device is AK2001.  Here is the contact information for Davis Instruments:

            Davis Instruments
            4701 Mount Hope Drive
            Baltimore, MD  21215
            Telephone (800) 368-2516