Seeing is Believing – Detection Made Easy Part 4: Refractive Index Detector Understanding Refractive Index (RI) Detection in HPLC – Seeing the Unseen When people think of HPLC detectors, UV-Vis absorbance systems usually steal the spotlight, and for good reason. They’re sensi... Detection HPLC Basics Instrumentation KNAUER LabTechnology RID Apr 22, 2026