IC is a shortcut for ICUMSA. It is a worldwide body, which brings together the activities of the National Committees for Sugar Analysis in more than thirty member countries. It is solely concerned with analytic method standards, and the ICUMSA Methods Book contains detailed instructions for analyzing raw, cane, white, beet, molasses, plantation white and specialty sugars.
An ICUMSA rating is an international unit for expressing the purity of the sugar in solution, and is directly related to the color of the sugar. Be aware that there are different types of ICUMSA units.