What makes pH control a problem? After all, you have a simple scale with values ranging between zero and fourteen. The problem here is the numerous constraints that contribute to the difficulties of keeping a constant pH value. For instance, a small temperature change can trigger a chemical chain that changes a medium's composition. Your medium can easily move from being acidic to neutral or basic, affecting the outcome of your commercial undertaking. Indeed, it helps to keep ensure that your pH is always accurate. Here is what you should know regarding a pH controller's calibration to help you make the right decisions:

Procedures Used in Calibration

A pH controller's primary task is examining and regulating the level of acidity or alkalinity of a medium. They help you maintain suitable mediums for the growth of plants, pharmaceutical product processing and other industrial processes. Typically, pH controllers relay the information you need through a scale. Proper calibration of the scale is essential for ensuring the accuracy of your readings. Some of the procedures used during calibration include:

• One-point calibration – Just as the name suggests, the one-point calibration procedure involves using one solution to reference the calibration. In this case, you will verify the zero point of a pH electrode. This procedure assumes that the rising pH value corresponds with the response of the pH electrode to electric current, ions and magnetic fields. Traditionally, the one-point calibration is the fastest calibration method for pH controllers.
• Two-point calibration – The two-point calibration procedure involves two reference solutions that form the base of your controller's calibration. When calibrating, two units act as the minimum pH level difference, and the maximum pH you can measure is the result of a straight-line graph cutting through the various measuring points. It is worth noting that the electrodes on a pH controller exhibit excellent linearity. Therefore, the integration of a straight-line graph means that your calibrated controller provides high accuracy levels when measuring your pH.
• Multi-point calibration – In this procedure, the calibration involves three or more solutions acting as the reference point for your pH controller. Usually, these solutions have a difference of 0.5 pH values or more, and they are ideal for calibrators used to monitor volatile solutions or compounds. The final step involves a regression analysis of the calibration reading to consider the variables from all the base solutions used.

For more information, contact a company that offers pH controllers for more information.