pH Balance Test Strips for Acidity/Alkalinity Readings. pH ion Balance Diagnostic pH Test Strips. Easy to read. Unlike regular pH paper the pH ion Diagnostic pH Test Strips' dual pad indicator is super easy to read. Super-sensitive pH ion Diagnostic pH Test Strips give you an extremely accurate reading of how acidic or alkaline your tissues really are. Wide measurement range of 4.5 - 9.0. No guesswork. Because pH ion Diagnostic pH Test Strips measure tight 0.25 increments you'll know exactly what your pH is. Versatile. pH ion Diagnostic pH Test Strips can test both urine and saliva to give you the most complete picture of your pH balance. 15 second results. Practitioner preferred. With all these benefits it's no wonder so many practitioners recommend the pH ion brand! 90 test strips per bottle.