This Acid, Neutral or Base Test Paper can be used to determine acidity, or basicity of a solution. It provides a NEUTRAL color transition range of only 1.0 pH unit (pH 6.4 - 7.4). Acid range (pH 2.0 to 6.3). Neutral range (pH 6.4 to 7.4). Base range (pH 7.4 to 13.0). Strip dimensions about 1/4" x 1 7/8". One vial, containing about 100 strips. |