| 摘要 |
<p>Method for control of the pH concn. of liquid soln., having a first electrode set, consisting of a first metal, which has the characteristics of a curve symbolising a pH concn., depending on the momentary corrosion speed of the first metal, showing a first outline. A second electrode set is planned, which consists of a different second metal, whereby the characteristics of the second metal are as such, that a curve, symbolising the pH concn., depending on the momentary corrosion speed, shows a second outline, and whereby the metals are selected in such a way, that both outlines are different in the pH range. Both electrode sets are dipped into the liquid soln. and determine the momentary corrosion speed of first and second electrode set in the soln., and the momentary corrosion speed is used to control the pH concn. of the soln.</p> |
