Development of upstream processes, that maximize productivity without increasing complexity, relies on the right combination of medium and feed and the ability to maintain tight control of culture conditions. In fed-batch mode, cells are initially grown in a relatively lean production medium followed by regular feed supplementation to achieve the desired product yield. This App Note presents an optimized feeding strategy and demonstrates how a new, easy-to-hydrate, single-part, pH neutral feed can support optimal cell growth and high productivity of…