MARTYN F. CHILLMAID / SCIENCE PHOTO LIBRARY MARTYN F. CHILLMAID / SCIENCE PHOTO LIBRARY
Finding the end point of an iodine titration. The titrant, a standard thiosulfate solution, is titrated against the iodate solution until it turns pale yellow. Starch is added to turn it a very dark blue which sharpens the end point. Continue titrating.
Model release not required. Property release not required.