Commonly used to test urine and saliva, this short-range Hydrion pH Paper is excellent for measuring pH solutions around neutral pH 7.00 and offers clear bright single color matches at every .5 interval from pH 4.5-8.5. The color chart has pH matches at [4.5][5.0][5.5][6.0][6.5][7.0][7.5][8.0][8.5]...