Yogurt Waste (IMAGE) University of Wisconsin-Madison Caption University of Wisconsin-Madison Center for Dairy Research food technologist Dean Sommer shows a beaker of acid whey. The high-tech filters used to separate the various components are inside the metal pipes. Credit UW-Madison College of Agricultural and Life Sciences Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.