Procter & Gamble View Institution's Website 1 article published in JoVE Biology Quantifying Mixing using Magnetic Resonance Imaging Emilio J. Tozzi1, Kathryn L. McCarthy1, Lori A. Bacca2, William H. Hartt2, Michael J. McCarthy1 1Dept. Food Science and Technology, University of California, Davis, 2Corporate Engineering and Technology Laboratory, Procter & Gamble Company Magnetic resonance imaging (MRI) provides a powerful tool to evaluate the effectiveness of process equipment during operation. We discuss the use of MRI to visualize mixing in a static mixer. The application is relevant to personal care products, but can be applied to a broad range of food, chemical, biomass and biological fluids.