BILLERICA, Mass., Millipore Corporation, the Life Science business of Merck KGaA of Germany, that operates as EMD Millipore in the U.S. and Canada, today announced that all its remaining outstanding 3.75% Convertible Senior Notes Due 2026 (the “Notes”) were redeemed on December 1, 2011, at one hundred percent (100%) of the outstanding principle amount of the Notes.

Most of the Notes were already converted by its holders between June and August 2010 in connection with certain conversion rights resulting from the acquisition of Millipore Corporation by Merck KGaA, and only a principal amount of US$ 27.2 million of the originally issued notes in the principal amount of US$ 550 million remained outstanding upon the call for redemption as of December 1, 2011. All remaining outstanding Notes have now been redeemed.

Millipore had announced the intended redemption on November 1, 2011, and notified holders of the Notes accordingly. As a result of the call for redemption, the Notes could also be surrendered by their holders for conversion, and independent of such redemption and related conversion right, holders of the Notes also had the right, at their option, to require Millipore to purchase their Notes on December 1, 2011, at a purchase price, payable in cash, equal to one hundred percent (100%) of the principal amount of the Notes, or to surrender their Notes for conversion at any time between November 1, 2011, and December 1, 2011.

All notes of holders that did not exercise any of these rights were automatically redeemed on December 1, 2011, and no Notes remain outstanding.

About EMD Millipore

EMD Millipore is the Life Science division of Merck KGaA of Germany and offers a broad range of innovative, performance products, services and business relationships that enable our customers’ success in research, development and production of biotech and pharmaceutical drug therapies. Through dedicated collaboration on new scientific and engineering insights, and as one of the top three R&D investors in the Life Science Tools industry, EMD Millipore serves as a strategic partner to customers and helps advance the promise of life science.

Headquartered in Billerica, Massachusetts, the division has around 10,000 employees, operations in 68 countries and 2010 revenues of $2.2 billion. EMD Millipore is known as Merck Millipore outside of the U.S. and Canada.

Note: Merck KGaA or Merck shall mean Merck KGaA, Darmstadt, Germany

Millipore Corporation was acquired in 2010 and is now a division of Merck KGaA of Germany. The division is known as EMD Millipore in the U.S. and Canada, and as Merck Millipore in the rest of the world.

About Merck

Merck is a global pharmaceutical and chemical company with total revenues of € 9.3 billion in 2010, a history that began in 1668, and a future shaped by more than 40,000 employees in 67 countries. Its success is characterized by innovations from entrepreneurial employees. Merck’s operating activities come under the umbrella of Merck KGaA, in which the Merck family holds an approximately 70% interest and shareholders own the remaining approximately 30%. In 1917 the U.S. subsidiary Merck & Co. was expropriated and has been an independent company ever since.