UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the

Securities Exchange Act of 1934

Date of Report (Date of Earliest Event Reported): January 1, 2005

MILLIPORE CORPORATION

(Exact name of Registrant as specified in charter)

MASSACHUSETTS	001-09781 (0-1052)	04-2170233
(State or other jurisdiction of incorporation)	(Commission File Number)	(I.R.S. Employer Identification No.)

290 Concord Road, Billerica, Massachusetts 01821

(Address of Principal Executive Offices) (Zip Code)

Registrant’s Telephone number, including area code: (978) 715-4321

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below):

¨ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

¨ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

¨ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

¨ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Item 1.01. Entry into a Material Definitive Agreement.

On January 4, 2005, Millipore Corporation and its new President and CEO, Dr. Martin D. Madaus, entered into an Executive Termination Agreement and an Officer Severance Agreement, both of which are effective as of Dr. Madaus’ start date, January 1, 2005. These agreements were described in the Company’s Form 8-K of October 25, 2004, in which the appointment of Dr. Madaus was disclosed.

-2-

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

MILLIPORE CORPORATION

/s/ Jeffrey Rudin

Jeffrey Rudin

Vice President and General Counsel

Date: January 5, 2005

-3-