What process is used to determine the acidity or alkalinity of a flow?

pH testing is the process used to determine the acidity or alkalinity of a flow, such as water or other liquids. The pH scale measures how acidic or basic a solution is, ranging from 0 to 14, with values below 7 indicating acidity, values of 7 suggesting neutrality, and values above 7 representing alkalinity. This measurement is crucial in various fields, including water treatment, environmental monitoring, agriculture, and laboratory analysis, as it helps assess the quality of water and its suitability for different applications.

In contrast, soil testing primarily evaluates the nutrient content, composition, and pH of soil to inform agricultural practices. Water filtration involves the physical and chemical processes designed to remove impurities and contaminants from water but does not directly measure its acidity or alkalinity. Temperature analysis deals with measuring the temperature of a substance and does not provide information regarding its pH level. Thus, pH testing stands out as the specific method for assessing acidity or alkalinity in various flows.