When an analyte that is a reducing agent is titrated directly with a standard iodine solution, the method is called "iodimetry".
When an analyte that is an oxidizing agent is added to excess iodide to produce iodine, and the iodine produced is determined by titration with sodium thiosulfate, the method is called "iodometry".
Author: Fred Senese senese@antoine.frostburg.edu