Exhibit 24.1

POWER OF ATTORNEY

KNOW ALL MEN BY THESE PRESENTS, that the undersigned Directors and Officers of Millipore Corporation (the Corporation), do hereby constitute and appoint Martin D. Madaus, Charles F. Wagner, Jr. and Jeffrey Rudin and each of them
individually, their true and lawful attorneys and agents to execute on behalf of the Corporation the Form 10-K Annual Report of the Corporation for the fiscal year ended December 31, 2009, and all such amendments or additional instruments
related thereto which such attorneys and agents may deem to be necessary and desirable to enable the Corporation to comply with the requirements of the Securities Exchange Act of 1934, as amended, and any regulations, orders, or other requirements
of the United States Securities and Exchange Commission thereunder in connection with the preparation and filing of said documents, including specifically, but without limitation of the foregoing, power and authority to sign the names of each of
such Directors and Officers on his behalf, as such Director or Officer, as indicated below to the said Form 10-K Annual Report or documents filed or to be filed as a part of or in connection with such Form 10-K Annual Report; and each of the
undersigned hereby ratifies and confirms all that said attorneys and agents shall do or cause to be done by virtue thereof.



|                                                 |  |          |  |                  
|------------------------------------------------ |  | -------- |  | -----------------
|Signature                                        |  | Title    |  | Date             
|                                                 |  |         
|/S/    MARTIN D.
MADAUS Martin D. Madaus         |  | Director |  | February 10, 2010
|                                                 |  |         
|/S/    DANIEL
BELLUS Daniel Bellus               |  | Director |  | February 10, 2010
|                                                 |  |         
|/S/    ROBERT C.
BISHOP Robert C. Bishop         |  | Director |  | February 10, 2010
|                                                 |  |         
|/S/    MELVIN D.
BOOTH Melvin D. Booth           |  | Director |  | February 10, 2010
|                                                 |  |         
|/S/    ROLF
CLASSON Rolf Classon                 |  | Director |  | February 10, 2010
|                                                 |  |         
|/S/    MAUREEN A.
HENDRICKS Maureen A. Hendricks |  | Director |  | February 10, 2010
|                                                 |  |         
|/S/    MARK
HOFFMAN Mark Hoffman                 |  | Director |  | February 10, 2010
|                                                 |  |         
|/S/    ROBERT S.
LANGER Robert S. Langer         |  | Director |  | February 10, 2010
|                                                 |  |         
|/S/    JOHN F.
RENO John F. Reno                 |  | Director |  | February 10, 2010
|                                                 |  |         
|/S/    EDWARD M.
SCOLNICK Edward M. Scolnick     |  | Director |  | February 10, 2010
|                                                 |  |         
|/S/    KAREN E.
WELKE Karen E. Welke             |  | Director |  | February 10, 2010