10/case 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] directions: simply dip the ph strip into the test solution, then instantly compare the resulting color with the matching ph color chart. 04/10/14
