pHmõõturil

A pHmõõturil, or pH meter in English, is an electronic instrument used to measure the acidity or alkalinity of a liquid. It works by detecting the hydrogen ion activity in a solution. The instrument typically consists of a glass electrode and a reference electrode, which are immersed in the liquid to be tested. The difference in electrical potential between these two electrodes generates a voltage that is proportional to the pH of the solution. This voltage is then interpreted by a meter that displays the pH value on a numerical scale.

pH meters are essential tools in a wide range of fields. In laboratories, they are used for precise chemical analysis, quality control, and research. In agriculture, they help monitor soil and water pH for optimal plant growth. The food and beverage industry utilizes pH meters to ensure product consistency and safety, such as in brewing, winemaking, and dairy production. Environmental monitoring also relies on pH meters to assess the acidity of water bodies and wastewater.

Calibration is a crucial step in ensuring the accuracy of a pH meter. This involves using standard buffer solutions with known pH values to adjust the meter's readings. Regular calibration and proper maintenance, including electrode care, are necessary for reliable and consistent measurements. Different types of pH meters exist, ranging from simple handheld devices to sophisticated benchtop models, each suited for specific applications and accuracy requirements.