Sulforhodamine G is widely used as a fluorescent dye in biological and analytical applications. It is particularly valuable in fluorescence microscopy for staining cells and tissues, allowing researchers to visualize cellular structures and track biological processes. Its strong fluorescence and photostability make it suitable for use in tracer studies, where it helps monitor fluid flow in environmental and industrial systems. It is also employed in diagnostic assays and as a marker in electrophoresis and chromatography due to its high detectability at low concentrations. Additionally, Sulforhodamine G serves as a fluorescent probe in studying protein interactions and membrane dynamics.