pH Calibration Solution Set pH 4.01 / 7.00 / 10.01 + 3M KCl Storage Solution

This set contains three bottles of pH calibration solution (pH 4.01/ pH 7.00/ pH 10.01) and one bottle of 3M KCl storage solution, each containing 250ml. Solutions: pH 4.01 + pH 7.00 + pH 10.01 + 3M KCl, 250ml each Precise calibration: pH solutions accuracy of pH 0.015 allows highly accurate calibration Easy recognition: Based on the colors, you can recognize the correct solution at a glance (pH 4: red, pH 7: green, pH 10: blue) The 3M KCl storage solution preserves the sensitivity and accuracy of pH / ORP electrodes Use immediately: Instead of dissolving powder in distilled water first, you can use this solution immediately Long shelf life, batch certificate available on the Internet more