Refractive Index Detector

A Refractive Index Detector (RID) is a device used in analytical chemistry to identify and quantify substances in a mixture. It works by measuring how much the mixture bends light, which changes depending on the concentration of dissolved compounds. When a sample passes through the detector, it compares the refractive index (light bending property) of the sample to that of a pure solvent. Differences indicate the presence and amount of various components. RIDs are widely used because they can detect many types of compounds that don't absorb UV light, making them versatile for analyzing complex mixtures.