Conveniently packed in flip-top vials, these premium quality, wide-range plastic strips offer clear, bright single color matches at every 1.0 interval from pH 0.0-14.0. The color chart has pH matches at [0.0][1.0][2.0][3.0][4.0][5.0][6.0][7.0][8.0][9.0][10.0][11.0][12.0][13.0][14.0] Each vial contains 100 strips. Note: Not for testing water. Use Micro Essential's LI-5000 or LI-5900 for water.