Patent 7714111 was granted and assigned to Wyeth on May, 2010 by the United States Patent and Trademark Office.
The invention relates to methods for isolating a product and/or reducing turbidity and/or impurities from a load fluid comprising the product and one or more impurities by passing the load fluid through a medium, followed by at least one wash solution comprising an arginine derivative, and collecting the product using an elution solution. The invention further relates to a product prepared using a method as described herein.