detector refractive index detector CHMO:0002585 RI detector A piece of apparatus, consisting of a light source, a hollow prism and a photoelectric cell that is used to detect non-ultraviolet-absorbing molecules in a sample separated by chromatography. Light from the sample passes through a flow cell with two channels towards the photoelectric cell. One channel holds the eluent from the column, whereas the other holds a control sample (solvent that has not passed through the column). Detection occurs when the light is bent due to molecules eluting from the column, and this is read as a disparity between the two channels. https://orcid.org/0000-0001-5985-7429 refractive-index detector 2009-11-04T05:38:41Z