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]
وصف
The Hydrion Insta-Chek Mechanical pH Pencil measures the pH of any surface to the nearest full pH value. The Hydrion pH pencil can be used to test irregular or uneven surfaces, and is also effective on porous material and impervious solids. It offers clear bright single color matches at every 1.0 interval from pH 0.0-13.0.