 RADNOR, Pa. and SCHWABMÜNCHEN, Germany, April 12, 2021 PRNewswire -- Avantor, Inc. NYSE: AVTR, a leading global provider of mission-critical products and services to customers in the life sciences and advanced technologies applied materials industries, announced today that it has entered into a definitive agreement to acquire privately held Ritter GmbH and its affiliates in an all-cash transaction with an upfront equity purchase price of approximately 890 million subject to final adjustments at closing and additional payments based on achieving future business performance milestones. 