IN–SINK–ERATOR is… The inventor of the food waste disposer. The largest disposer manufacturer in the world. ISO-9001 certified — meeting ISO institute standards on documented quality control processes. A division of Emerson, the largest manufacturer of fractional horsepower motors in the world, such as the ones used in IN–SINK–ERATOR products. The worldwide market leader with a 10 : 1 preference by plumbers in the largest markets in the world. Sold in over 80 countries around the world — an international corporation with headquarters at Racine, Wisconsin, U.S.A. The manufacturer of millions of disposers every year.