MILLIPORE CORP
S-3, 1999-06-16
LABORATORY ANALYTICAL INSTRUMENTS
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As filed with the Securities and Exchange Commission on June 16,
                              1999
                                             Registration No.

               SECURITIES AND EXCHANGE COMMISSION
                     Washington, D.C. 20549
                        _________________
                            FORM S-3
                     Registration Statement
                              under
                   The Securities Act of 1933
                     _______________________

                      MILLIPORE CORPORATION
     (Exact name of registrant as specified in its charter)

         Massachusetts                      04-2170233
 (State or other jurisdiction            (I.R.S. Employer
      of incorporation or             Identification Number)
         organization)

                          80 Ashby Road
                  Bedford, Massachusetts  01730

                          (781)533-6000
       (Address, including zip code, and telephone number,
      including area code, of principal executive offices)

                       Jeffrey Rudin, Esq.
               Vice President and General Counsel
                      Millipore Corporation
                          80 Ashby Road
                  Bedford, Massachusetts  01730

                          (781)533-6000
        (Name, address, including zip code, and telephone
       number, including area code, of agent for service)

Approximate date of commencement of proposed sale to the public:
From time to time after the effectiveness of the Registration
Statement.

If the only securities being registered on this form are being
offered pursuant to dividend or interest reinvestment plans,
please check the following
box. ()

If any of the securities being registered on this form are to be
offered on a delayed or continuous basis pursuant to Rule 415
under the Securities Act of 1933, other than securities offered
only in connection with dividend or interest reinvestment plans,
check the following box.  (x)

If this form is filed to register additional securities for an
offering pursuant to Rule 462(b) under the Securities Act, please
check the following box and list the Securities Act registration
statement under the earlier effective registration statement for
the same offering.  ()

If this form is a post effective amendment filed pursuant to Rule
462(c) under the Securities Act, check the following box and list
the Securities Act registration statement number of the earlier
effective registration statement for the same offering.  ()

If delivery of the prospectus is expect to be made pursuant to
Rule 434, please check the following box:  ()
                             <PAGE>

<TABLE>
<CAPTION>
                 CALCULATION OF REGISTRATION FEE
<S>                 <C>       <C>            <C>            <C>
                                 Proposed       Proposed     Amount of
  Title of each     Amount to     maximum       maximum     registration
     class of           be       offering      aggregate        fee
 Securities to be   registered     price        offering
    registered                   per share     price (1)
                                    (1)
Common Stock --      660,000     $34.1875    $22,563,750.00  $6,272.72
$1.00 par value,
together with
associated Common
Stock purchase
rights
</TABLE>
(1)  Estimated solely for the purpose of determining the
registration fee in accordance with Rule 457(c) under the
Securities Act.  The maximum price per share information is based
on the average of the high and low sale prices of the
Registrant's common stock, $1.00 par value per share, reported on
the New York Stock Exchange on June 10, 1999.

The Registrant hereby amends this Registration Statement on such
date or dates as may be necessary to delay its effective date
until the Registrant shall file a further amendment which
specifically states that this Registration Statement shall
thereafter become effective in accordance with Section 8(a) of
the Securities Act of 1933 or until this Registration Statement
shall become effective on such date as the Commission, acting
pursuant to said Section 8(a), may determine.

                             <PAGE>
                      Subject to Completion
Dated June 15, 1999



PROSPECTUS



                      Millipore Corporation
                          Common Stock
                         660,000 Shares

                          ____________


     The stockholders of Millipore Corporation listed on page 5
may offer and sell up to 660,000 shares of Millipore common stock
(including associated common stock purchase rights) under this
prospectus.

     BEFORE PURCHASING SHARES OF OUR COMMON STOCK YOU SHOULD
CAREFULLY REVIEW THE RISK FACTORS SECTION OF THIS PROSPECTUS
WHICH BEGINS ON PAGE 3.

     The selling stockholders may offer their shares in public
transactions on the New York Stock Exchange at prevailing market
prices or in negotiated private transactions at negotiated
prices.  Millipore common stock is listed on the New York Stock
Exchange ("NYSE") with the ticker symbol:  "MIL."  On June 10,
1999, the closing price of one share of Millipore common stock on
the NYSE was $34.0625.

Neither the Securities and Exchange Commission nor any state
securities commission has approved or disapproved of these
securities or passed upon the adequacy or accuracy of this
prospectus.  Any representation to the contrary is a criminal
offense.

                     ______________________



        The date of this Prospectus is ___________, 1999


 The information in this prospectus is not complete and may be
changed.  We may not sell these securities until the registration
statement filed with the Securities and Exchange Commission is
effective.  This prospectus is not an offer to sell these
securities and it is not soliciting an offer to buy these
securities in any state where the offer or sale is not permitted.
                             <PAGE>













     We have not authorized any person to provide information or
make any representation about this offering that is not in this
prospectus.  Prospective investors should rely only on the
information contained in this prospectus.  This prospectus is not
an offer to sell nor is it seeking an offer to buy these
securities in any jurisdiction where the offer or sale is
prohibited.  Information in this prospectus is correct only as of
its date, regardless of when any later offer or sale occurs.


                           THE COMPANY


     Millipore Corporation is a market leader in the field of
separations technology and develops, manufactures and sells
products that are used primarily for the analysis,
identification, monitoring and purification of liquids and gases.
Our separations products are based on a variety of membrane and
other technologies that effect separations through physical and
chemical methods and are applied primarily to biological and
environmental laboratory research and testing, to pharmaceutical
and food and beverage research, manufacturing and quality control
and to the purification and control of process liquids and gases
for integrated circuit manufacturing operations.  We are an
integrated multinational manufacturer of these products.

Our principal executive offices are located at 80 Ashby Road,
Bedford, Massachusetts 01730 and our telephone number is (781)533-
6000.


                               -2-
                             <PAGE>


                          RISK FACTORS

     This prospectus, including any documents that we have
incorporated by reference  into this prospectus, contains certain
forward-looking statements that involve substantial risks and
uncertainties.  Our actual results, performance or achievements
could differ materially from the results expressed in, or implied
by, these forward-looking statements.  Potential risks and
uncertainties that could affect our future operating results
include, among other things, the following:   Increased
regulatory concerns on the part of the biopharmaceutical
industry; further consolidation of drug manufacturers;
competitive factors such as new membrane technology and/or a new
method of chip manufacture which relies less heavily on purified
chemicals and gases; availability of component products on a
timely basis; and inventory risks due to shift in market demand;
change in product mix; the failure to realize the savings
contemplated by certain restructuring activities; and the
inability to utilize technology in current or planned products
due to overriding rights by third parties.  In addition, you
should carefully consider the following risk factors before
making any decision to buy our common stock.

WE OPERATE IN A HIGHLY COMPETITIVE ENVIRONMENT.

     We face intense competition in all of our sales to
customers.  Some of our competitors are larger and have greater
financial and other resources than us.  We believe that the
principal competitive factors affecting our business include
price, technical expertise, product quality and responsiveness to
customer needs, including service and technical support.

WE ARE SUBJECT TO FOREIGN CURRENCY EXCHANGE RISKS DUE TO OUR
SIGNIFICANT LEVEL OF INTERNATIONAL SALES.

     Approximately 60% of our sales derive from sales to
customers outside the United States.  Consequently, our results
of operations could be negatively affected by a material
strengthening of the U.S. dollar over a short period of time.
Exchange rate fluctuations are beyond our control, and there can
be no assurance that the U.S. dollar will not appreciate against
the Japanese yen, the euro, or other currencies in which we earn
a significant portion of our revenues.

WE ARE SUBJECT TO ENVIRONMENTAL, HEALTH AND SAFETY REGULATIONS
AND COULD ENCOUNTER SIGNIFICANT COMPLIANCE AND REMEDIATION COSTS.

     Our operations are subject to federal, state, local and
foreign environmental and health and safety laws and regulations.
These laws and regulations impose workplace standards and
limitations on the discharge of pollutants into the environment
and set standards for handling, generating, emitting, releasing,
discharging, treating, storing, and disposing certain materials,
substances and wastes.  We have in the past been named a
potentially responsible party at a number of hazardous waste
sites.  We have settled our liability relating to most of these
sites, and we believe that any future remaining liabilities
relating to these sites should not have a material adverse effect
on our financial condition.  However, future events, such as
changes in existing laws and regulations or enforcement policies
or the discovery of contamination on sites we operate, could
result in significant additional compliance costs.

OUR PERFORMANCE MAY BE AFFECTED IN PART, BY THE CYCLICALITY OF
THE MICROELECTRONICS INDUSTRY WHICH AT TIMES LEADS TO REDUCED
PRODUCT DEMAND.

     A substantial portion of our business depends upon the
future worldwide growth of the microelectronics industry,
particularly the semiconductor portion.  The microelectronics
industry is highly cyclical and historically has experienced
periods of oversupply, resulting in significantly reduced demand
for capital equipment, including the products we manufacture.  As
a result of this cyclicality, we have experienced, and in the
future could experience, reduced revenues.

                               -3-
                             <PAGE>

OUR FAILURE TO IDENTIFY AND REMEDIATE ALL MATERIAL YEAR 2000
RISKS, OR PROBLEMS AMONG OUR SUPPLIERS OR CUSTOMERS, COULD
SIGNIFICANTLY DISRUPT OUR BUSINESS.

     We are aware of the Year 2000 issues that will affect
certain products and systems that were not designed to properly
handle the transition between the twentieth and twenty-first
centuries.  We have taken action to attempt to ensure that our
business operations will not be adversely impacted by the
transition into the Year 2000.  Among the areas that we have been
addressing are our internal information systems, our
manufacturing equipment and facilities, our products, and the
Year 2000 readiness of our key suppliers and financial
institutions.  Our incremental spending on our Year 2000
readiness program is not expected to be material because most
Year 2000 readiness costs will be met with amounts that are
normally budgeted for procurement and maintenance of our
information systems and infrastructure.  However, the redirection
of spending to the implementation of our Year 2000 readiness
program may delay some productivity improvements.  Though we
believe we are  appropriately preparing ourselves for the Year
2000 and minimizing the chances of any adverse impact to our
business operations, Year 2000 issues present a number of risks
and uncertainties that could materially impact our business,
financial condition or results of operations.  These risks and
uncertainties include, among other things, failure of utilities
or transportation systems, competition for personnel skilled in
remediation of Year 2000 issues, the nature of government
responses to Year 2000 issues, and failure to successfully
implement parts of our Year 2000 readiness program.




                         USE OF PROCEEDS

     All net proceeds from the sale of the shares of our common
stock in this offering will go to the stockholders who offer and
sell them.  We will not receive any proceeds from this offering.



                      SELLING STOCKHOLDERS

     The selling stockholders acquired their shares of Millipore
common stock from us in exchange for all of the outstanding
equity interests in Bioprocessing Corporation Limited, a company
that we acquired from the selling stockholders in May 1999.  Some
of the selling stockholders are now or have during the last three
years been active in the management of Bioprocessing Corporation
Limited and its subsidiaries.  We have agreed with each of the
selling stockholders that we would use our reasonable efforts to
register their shares.  Registration of these shares does not
necessarily mean that the selling stockholders will offer or sell
all or any of the shares.

     Based on the information available to us, including
information we have received from the selling stockholders, we
believe that the shares listed below represent all of the shares
that each selling stockholder currently beneficially owns.  Any
or all of these shares may be sold, from time to time, by the
selling stockholders pursuant to this prospectus.  Since each of
the listed stockholders' percentage ownership of our common stock
is less than one percent, no percentage is indicated for any
selling stockholders in the table below.






                               -4-
                             <PAGE>




     Selling                         Shares
   Stockholder                        Owned
                                    and Being
                                     Offered

Crown Capital                      51,384
Limited
Dr. Frank M.                       26,613
Roberts
Thomas M. Swan                     15,149
Kerry F. Napuk                     11,259
Dr. Kamran                         7,495
Beyzavi
Alta Berkeley
     Associates                    33,185
Limited
Alta Berkeley LP                   228,914
II
Transatlantic
Capital                            90,915
     General
Partners `C' Ltd.
Ferraris Group                     30,503
plc
Harry W. Childs                    30,503
Innoven LLC                        51,834
BTG International                  69,112
Limited
Dr. John N.D.                      4,510
Heap
Geoffrey R. Race                   2,706
Helen C. Wood                      1,804
David R. Standen                   1,804
Karen Bambury                      1,330
Jeff Wilson                        980



                      PLAN OF DISTRIBUTION

     We are registering the shares on behalf of the selling
stockholders.  The selling stockholders may offer their shares of
our common stock at various times in one or more of the following
types of transactions:

 on the New York Stock Exchange

 in private negotiated
 transactions, including in
 settlement of options
 transactions and in
 settlement of short sales of
 shares of our common stock

     The selling stockholders may sell their shares at market
prices prevailing at the time of sale, at prices related to such
prevailing market prices, or at negotiated prices.

     The selling stockholders may use broker-dealers to sell
their shares.  If this happens, broker-dealers will either
receive discounts or commissions from the selling stockholders,
or they will receive commissions from purchasers of shares for
whom they acted as agents.

     Selling stockholders also may resell all or a portion of the
shares in open market transactions in reliance upon Rule 144
under the Securities Act, provided they meet the criteria and
conform to the requirements of that rule.


                               -5-
                             <PAGE>



                      AVAILABLE INFORMATION

     We file annual, quarterly and special reports, proxy
statements and other information with the SEC.  You may read and
copy any document we file with the SEC at the SEC's Public
Reference Room at 450 Fifth Street, N.W., Washington, D.C. 20549.
Please call the SEC at 1-800-SEC-0330 for further information on
the Public Reference Room.  Our SEC filings are also available to
the public from the SEC's Website at "http://www.sec.gov."  Our
common stock is listed on the NYSE under the symbol "MIL" and the
periodic reports, proxy statements and other information we file
with the SEC may also be inspected at the offices of the NYSE at
20 Broad Street, New York, New York 10005.  Information regarding
us is also available on our Website,  "http://www.millipore.com".



               WHERE YOU CAN FIND MORE INFORMATION

     The SEC allows us to incorporate by reference the
information we file with them, which means that we can disclose
important information to you by referring you to those documents.
The information incorporated by reference is considered to be
part of this prospectus, and the information that we file later
with the SEC will automatically update and supersede this
information.  We incorporate by reference the documents listed
below:

          (1)  Our Annual Report on Form 10-K for the fiscal year
          ended December 31, 1998.

          (2)  Our Quarterly Report on Form 10-Q for the
          quarterly period ended March 31, 1999.

          (3)  The description of our Common Stock set forth in
          our Form 8-A Registration Statement, filed May 13,
          1965, and our Annual Report on Form 10-K for the fiscal
          year ended December 31, 1998.

     In addition, this prospectus incorporates by reference any
future filings we will make with the SEC under Sections 13(a),
13(c), 14 or 15(d) of the Securities Exchange Act of 1934 from
the date of the initial filing of the Registration Statement that
includes this prospectus until the termination of the offering.
Information in this prospectus supersedes related information in
the documents listed above and information in subsequently filed
documents supersedes related information in both this prospectus
and the incorporated documents.

     We will, upon written or oral request, provide at no cost a
copy of any or all of the information that is incorporated by
reference.  Requests should be made to the following address and
telephone number:

               Millipore Corporation
               80 Ashby Road
               Bedford, Massachusetts 01730
               Attention:  General Counsel
               (781)533-6000

     This prospectus is part of a registration statement that we
have filed with the SEC.  You should rely only on the information
or representations provided in this prospectus.  We have not
authorized nor have any of the selling stockholders authorized
anyone to provide you with different information.  The selling
stockholders are not making an offer of these securities in any
state where the offer is not permitted.  You should not assume
that the information in this prospectus is accurate as of any
date other than the date on the front of the document.

                               -6-
                             <PAGE>

                    VALIDITY OF COMMON STOCK

     For the purpose of this offering, our General Counsel,
Jeffrey Rudin, Esq., is providing an opinion on the validity of
the shares.



                             EXPERTS

     The consolidated financial statements of the Corporation and
its subsidiaries incorporated herein by reference to the Annual
Report on Form 10-K for the year ended December 31, 1998, have
been so incorporated in reliance on the report of
PricewaterhouseCoopers LLP, independent accountants, given on the
authority of said firm as experts in auditing and accounting.







































                               -7-
                             <PAGE>

                             PART II

             INFORMATION NOT REQUIRED IN PROSPECTUS

Item 14.  Other Expenses of Issuance and Distribution.

     The following statement sets forth the estimated amounts of
expenses to be borne by the Registrant in connection with the
offering described in this Registration Statement.  None of the
expenses will be borne by the security holders.

Securities and Exchange Commission
  Registration Fee                                    $6,272.72

Legal Fees and Expenses                               $5,000.00

Accounting Fees and Expenses                          $5,000.00

Miscellaneous Expenses                                $1,727.28

     Total Expenses                                  $18,000.00

Item 15.  Indemnification of Directors and Officers.

     Section 67 of Chapter 156B of the Massachusetts General Laws
provides that indemnification of directors and officers of the
Registrant may be provided to the extent specified or authorized
by its articles of organization or a by-law provision adopted by
the stockholders.

      Under  Section  9  of  the By-laws of the  Registrant,  the
Registrant  shall,  to the extent legally permissible,  indemnify
each  of its directors and officers (including persons who  serve
at  its  request  as directors, officers or trustees  of  another
organization  or  in any capacity with respect  to  any  employee
benefit  plan)  against all liabilities and  expenses,  including
amounts  paid in satisfaction of judgments, in compromise  or  as
fines and penalties, and counsel fees, reasonably incurred by him
in connection with the defense or disposition of any action, suit
or  other proceeding, whether civil or criminal, in which he  may
be  involved or with which he may be threatened, while in  office
or  thereafter,  by  reason of his being or having  been  such  a
director  or  officer, except with respect to any  matter  as  to
which  he  shall have been adjudicated in any proceeding  not  to
have acted in good faith in the reasonable belief that his action
was  in  the best interests of the Registrant; provided, however,
that as to any matter disposed of by a compromise payment by such
director  or officer, pursuant to a consent decree or  otherwise,
no  indemnification  either for said payment  or  for  any  other
expenses  shall  be  provided unless  such  compromise  shall  be
approved as in the best interests of the Registrant, after notice
that  it  involves such indemnification:  (a) by a  disinterested
majority of the directors then in office; or (b) by a majority of
the  disinterested directors then in office, provided that  there
has  been  obtained  an opinion in writing of  independent  legal
counsel  to  the effect that such director or officer appears  to
have acted in good faith in the reasonable belief that his action
was  in  the  best interests of the Registrant;  or  (c)  by  the
holders  of  a  majority of the outstanding  stock  at  the  time
entitled  to  vote  for  directors, voting  as  a  single  class,
exclusive  of  any  stock  owned by any  interested  director  or
officer.   Expenses, including counsel fees, reasonably  incurred
by  any  director or officer in connection with  the  defense  or
disposition of any such action, suit or other proceeding  may  be
paid  from time to time by the Registrant in advance of the final
disposition  thereof  under receipt of  an  undertaking  by  such
director  or  officer  to  repay  the  amounts  so  paid  to  the
Registrant  if  it is ultimately determined that  indemnification
for  such expenses is not authorized under Section 9.  The  right
of indemnification provided by Section 9 of the By-laws is not to
be  exclusive and is not to affect any other rights to which  any
director or officer may be entitled.  As used in said Section  9,
the terms "director" and "officer" include their


                               -8-
                             <PAGE>
respective heirs, executors and administrators, and an
"interested" director or officer is one against whom in such
capacity the proceedings in question or another proceeding on the
same or similar grounds is then pending.  Nothing contained in
Section 9 shall affect any rights to indemnification to which
corporate personnel other than directors and officers may be
entitled by contract or otherwise under law.

          The Registrant has also purchased liability insurance
policies covering directors and officers in certain
circumstances.

Item 16.  Exhibits

Number  Description of Exhibit      Location

  4.1   Restated Articles of        Incorporated by reference to
        Organization,               Form 10-K Report for the
        as amended                  year ended December 31, 1996

  4.2   By-Laws, as amended         Incorporated by reference to
                                    Form 10-K Report for year
                                    ended December 31, 1990

  4.3   Shareholders Rights         Incorporated by reference to
        Agreement dated as of       Form 8-K Report filed April,
        April 15, 1988, as amended  1998
        and restated April 16,
        1998 between the
        Registrant and The First
        National Bank of Boston

  5.1   Opinion of Jeffrey Rudin,   Filed herewith.
        Esq., General Counsel of
        the Registrant, regarding
        legality of shares.

 23.1   Consent of                  Filed herewith.
        PricewaterhouseCoopers LLP

 23.2   Consent of Jeffrey Rudin,   Included in Exhibit 5.1
        Esq.                        filed herewith.

 24.1   Power of Attorney.          Filed herewith.


Item 17.  Undertakings.

     The undersigned registrant hereby undertakes:

     (1)  To file, during any period in which offers or sales are
being made, a post-effective amendment to this registration
statement (other than as provided in the proviso and instructions
to Item 512(a) of Regulation S-K) (i) to include any prospectus
required by Section 10(a)(3) of the Securities Act of 1933 (the
"Securities Act"); (ii) to reflect in the prospectus any facts or
events arising after the effective date of the registration
statement (or the most recent post-effective amendment thereof)
which, individually or in the aggregate, represent a fundamental
change in the information set forth in the registration
statement; and (iii) to include any material information with
respect to the plan of distribution not previously disclosed in
the registration statement or any material change to such
information in the registration statement.

     (2)  That, for the purpose of determining any liability
under the Securities Act, each such post-effective amendment
shall be deemed to be a new registration statement relating to
the securities offered therein, and the offering of such
securities at that time shall be deemed to be the initial bona
fide offering thereof.

                               -9-
                             <PAGE>


     (3)  To remove from registration by means of a post-
effective amendment any of the securities being registered which
remain unsold at the termination of the offering.

     (4)  That, for purposes of determining any liability under
the Securities Act, each filing of the registrant's annual report
pursuant to Section 13(a) or Section 15(d) of the Exchange Act
that is incorporated by reference in the registration statement
shall be deemed to be a new registration statement relating to
the securities offered therein, and the offering of such
securities at that time shall be deemed to be in the initial bona
fide offering thereof.

     Insofar as indemnification for liabilities arising under the
Securities Act may be permitted to directors, officers and
controlling persons of the registrant pursuant to the provisions
described in Item 15 above, or otherwise, the registrant has been
advised that in the opinion of the Securities and Exchange
Commission, such indemnification is against public policy as
expressed in the Securities Act and is, therefore, unenforceable.
In the event that a claim for indemnification against such
liabilities (other than the payment by the registrant of expenses
incurred or paid by a director, officer or controlling person of
the registrant in the successful defense of any action, suit or
proceeding) is asserted by such officer, director or controlling
person in connection with the securities being registered, the
registrant will, unless in the opinion of its counsel the matter
has been settled by controlling precedent, submit to a court of
appropriate jurisdiction the question whether such
indemnification by it is against public policy as expressed in
the Securities Act and will be governed by the final adjudication
of such issue.






                              -10-
                             <PAGE>
                           SIGNATURES

     Pursuant to the requirements of the Securities Act of 1933,
the Registrant certifies that it has reasonable grounds to
believe that it meets all of the requirements for filing on Form
S-3 and has duly caused this registration statement to be signed
on behalf by the undersigned, thereunto duly authorized, in
Bedford, Massachusetts, on June 15, 1999.

                              MILLIPORE CORPORATION

                              By:/s/ Jeffrey Rudin
                                 Jeffrey Rudin
                                 Vice President

                              Date:  June 15, 1999

     Pursuant to the requirements of the Securities Act of 1933,
this registration statement  has been signed below by the
following persons in the indicated capacities and on the
indicated date.

/s/ C. William Zadel  Chairman, President,  June 15, 1999
C. William Zadel      Chief Executive
                      Officer
                      and Director

/s/ Francis J.        Vice President,       June 15, 1999
Lunger                Chief
Francis J. Lunger       Financial Officer

/s/ Kathleen B.       Corporate Controller  June 15, 1999
Allen
Kathleen B. Allen

/s/ Robert C. Bishop  Director              June 15, 1999
*
Robert C. Bishop

/s/ Samuel C. Butler  Director              June 15, 1999
*
Samuel C. Butler

/s/ Robert E.         Director              June 15, 1999
Caldwell *
Robert E. Caldwell

/s/ Elaine L. Chao *  Director              June 15, 1999
Elaine L. Chao

/s/ Maureen A.        Director              June 15, 1999
Hendricks *
Maureen A. Hendricks

/s/ Mark Hoffman *    Director              June 15, 1999
Mark Hoffman

/s/ Thomas O. Pyle *  Director              June 15, 1999
Thomas O. Pyle

/s/ John F. Reno *    Director              June 15, 1999
John F. Reno


          *By    /s/ Jeffrey Rudin
              Attorney in Fact


                                 -11-
                         <PAGE>

                          EXHIBIT INDEX


Number   Title of Exhibit

4.1      Restated Articles of Organization, as       Incorporated
         amended                                     by Reference

4.2                                                  Incorporated
         By-Laws, as amended                         by Reference

4.3
         Shareholders Rights Agreement dated as of   Incorporated
         April 15, 1988,                             by
         as amended and restated April 16, 1998,     Reference
         between Millipore
5.1      Corporation and The First National Bank of
23.2     Boston


         Opinion Regarding Legality


23.1     Consent of Independent Accountants

24.1     Power of Attorney

                           <PAGE>


                           EXHIBIT 5.1
                   OPINION REGARDING LEGALITY
                     [MILLIPORE LETTERHEAD]
                                                  June 15, 1999



Securities and Exchange Commission
Washington, DC 20549

Ladies and Gentlemen:

     This opinion is rendered to you in connection with the
Registration Statement on Form S-3 of Millipore Corporation (the
"Company") to be filed with the Securities and Exchange
Commission under the Securities Act of 1933, as amended (the
"Registration Statement") covering the offering and possible
future sale by certain holders of 660,000 shares of common stock
of the Company (the "Common Stock").

     I am General Counsel of the Company and have acted as
counsel to the Company in connection with the preparation and
filing of the Registration Statement.  For purposes of this
opinion, I have examined and relied upon the information set
forth in the Registration Statement as well as such other
documents, records, certificates and other instruments as I have
deemed necessary for purposes of giving this opinion.

     I express no opinion as to the laws of any jurisdiction
other than those of the Commonwealth of Massachusetts and the
federal laws of the United States of America.

     Based upon and subject to the foregoing, I am of the opinion
that:

     1.  The Company is a corporation duly organized and validly
existing under the laws of the Commonwealth of Massachusetts.

     2.  The shares of Common Stock have been duly authorized and
validly issued and are fully paid and nonassessable.

     I understand that this opinion is to be used in connection
with the Company's Registration Statement relating to the Common
Stock to be filed with the Securities and Exchange Commission
under the Securities Act of 1933, as amended.  I consent to the
filing of this opinion with and as a part of the Registration
Statement and the use of my name therein.

                                   Very truly yours,

                                   /s/ Jeffrey Rudin

                                   Jeffrey Rudin
                                   Vice President and
JR/bb                                   General Counsel
                             <PAGE>


                          EXHIBIT 23.1

               CONSENT OF INDEPENDENT ACCOUNTANTS

     We hereby consent to the incorporation by reference in this
Registration Statement on Form S-3 of our report, dated January
20, 1999, except for Note B, for which the date is February 5,
1999 relating to the consolidated financial statements, which
appears in Millipore Corporation's Annual Report on Form 10-K for
the year ended December 31, 1998.  We also consent to the
reference to us under the heading "Experts" in such Registration
Statement.

                                   PRICEWATERHOUSECOOPERS LLP



Boston, Massachusetts
June 14, 1999
                             <PAGE>


                          EXHIBIT 24.1

                        POWER OF ATTORNEY


KNOW ALL MEN BY THESE PRESENTS, that the undersigned Directors of
Millipore Corporation (the "Corporation"), do hereby constitute
and appoint C. William Zadel, Francis J. Lunger and Jeffrey Rudin
and each of them individually, their true and lawful attorneys
and agents to execute on behalf of the Corporation the
Registration Statement on Form S-3 relating to 660,000 shares of
Millipore Common Stock to be offered and sold by the former
shareholders and optionholders of Bioprocessing Corporation
Limited, any and all amendments thereto (including post-effective
amendments and amendments thereto), and any and all such
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 Act
of 1933, 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 Registration Statement on Form S-3, including
specifically, but without limitation of the foregoing, power and
authority to sign the names of each of such Directors on his or
her behalf, as such Director, on any such documents or
instruments; 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


                      Chairman, President,        June 4, 1999
C. William Zadel      Chief Executive Officer
                      and Director



/s/ Robert C. Bishop  Director                    June 4, 1999
Robert C. Bishop



/s/ Samuel C. Butler  Director                    June 4, 1999
Samuel C. Butler



/s/ Robert E. Caldwell   Director                 June 4, 1999
Robert E. Caldwell





SIGNATURE             TITLE                  DATE



/s/ Elaine L. Chao    Director                    June 4, 1999
Elaine L. Chao



/s/ Maureen A. Hendricks Director                 June 4, 1999
Maureen A. Hendricks



/s/ Mark Hoffman      Director                    June 4, 1999
Mark Hoffman



/s/ Thomas O. Pyle    Director                    June 4, 1999
Thomas O. Pyle



/s/ John F. Reno      Director                    June 4, 1999
John F. Reno

                             <PAGE>








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