Conveniently packed in flip-top vials, these premium quality plastic pH strips offer excellent color separation in both the acid range (below pH 7) and the alkali range (above pH 7). Commonly used to test urine and saliva, it offers an easy to read, single color match at every .2 to .3 interval from pH 5.5-8.0. The color chart, presented on the label, has pH matches at [5.5][5.8][6.0][6.2][6.4][6.6][7.0][7.2][7.4][7.6][8.0] Each vial contains 100 strips All information on this web site is for informational purposes only. Products on this site are not intended to diagnose, treat, cure or prevent any disease or condition. Please contact a medical doctor to diagnose and treat any medical condition Healthy range 7.1-8 ph Simply dip the pH strip into the test solution (invitro), then instantly compare the resulting color with the matching pH color chart.