Used as a pH indicator in analytical chemistry, Ethyl Violet changes color depending on the acidity or alkalinity of a solution. It is particularly useful in titrations involving weak acids and strong bases. The color transition allows for visual determination of the endpoint in acid-base reactions. It is also employed in microbiology and histology for staining purposes, helping to differentiate cellular components under the microscope. Additionally, it finds use in educational labs for demonstrating pH-dependent color changes due to its distinct and sharp transition range.