has proper occurrent part liquid chromatography refractive index detection liquid chromatography-refractive index detection LC-RID LC/RID A liquid chromatography method where detection is based on the change in refractive index of a solution. Light passes through a hollow prism and is focused on a photocell. When the mobile phase is allowed to flow through the prism, the light diverges from its original path and the change in intensity and angle of the transmitted light is measured. liquid chromatography refractive index detection LCRID CHMO:0001744