August 2026

Introduction Uranine, also known as sodium fluorescein, is a bright yellow-green fluorescent dye used across multiple industries. It is widely used in water tracing, leak detection, medical diagnostics, laboratory research, and industrial testing because of its high visibility and excellent fluorescent properties. For manufacturers and industrial buyers, product quality is just as important as performance. A small variation in purity, particle size, or fluorescence can affect the final application. This is why experienced dyestuff manufacturers invest heavily in quality control throughout the production process. In this guide, we explain how uranine is manufactured, the quality checks performed during production, and what buyers should consider when choosing a reliable supplier. What Is Uranine? Uranine is the sodium salt of fluorescein. It dissolves easily in water and produces an intense green fluorescence when exposed to ultraviolet or blue light. Common applications include: Water flow tracing Leak detection Environmental monitoring Medical diagnostics Laboratory research Industrial inspection Hydraulic testing Its excellent water solubility and strong fluorescence make it one of the most commonly used fluorescent tracer dyes. Uranine Manufacturing Process The exact manufacturing process varies among manufacturers, and many production details are proprietary. However, reputable dyes manufacturers in India generally follow a controlled production…