pH measurement is a method used to determine the acidity or alkalinity of a solution. The pH scale ranges from 0 to 14, where values below 7 indicate acidity, values above 7 indicate alkalinity, and a value of 7 is considered neutral. This measurement is important in various fields, including chemistry, biology, and environmental science. To measure pH, scientists often use a pH meter or pH indicator strips. A pH meter provides a digital reading of the pH level, while indicator strips change color based on the acidity or alkalinity of the solution. Accurate pH measurement is essential for processes like agriculture, water quality testing, and laboratory experiments.