A U.S. Patent Application for a “Method for Purifying Antibodies Using PBS” was published by the U.S. Department of Health and Human Services on October 31st, 2019. The present invention includes a method for purifying a biologic composition, comprising diafiltering the biologic composition into a composition comprising phosphate buffered saline (PBS) to obtain a purified composition. The method disclosed here can be particularly useful for removing one or more impurities from the biologic composition, such as bis methane (Bis-tris). Learn More