SECURITIES AND EXCHANGE COMMISSION
                              
                   Washington, D. C. 20549
                              
                         FORM 8-K/A
                              
                              
                       CURRENT REPORT
                              
           Pursuant to Section 13 or 15(d) of the
               Securities Exchange Act of 1934
                              
 Date of Report (Date of earliest event reported):  December 31, 1996
                              
                    MILLIPORE CORPORATION
   (Exact name of registrant as specified in its charter)
                              


     Massachusetts            0-1052          04-2170233
    (State or other        (Commission       (IRS Employer
    jurisdiction of        File Number)     Identification
   incorporation or                              No.)
     organization)
                                                   
  80 Ashby Road, Bedford, Massachusetts          01730
(Address of principal executive offices)      (Zip Code)
                                                   
 Registrant's telephone number, including area code: (617) 275-9200
                                                   



                            INDEX


Item 7.    Financial Statements and Exhibits

       (a) Financial Statements of Amicon
           Report of Independent Accountants

                    Combined Balance Sheet at December 31,1996
               
                    Combined Statement Of Operations for the
                    year ended December 31, 1996

                    Combined Statement of Cash Flows for the
                    year ended December 31, 1996

                    Notes to the Combined Financial
                    Statements

                    Financial Statements of Tylan General,
                    Inc.
                  
                    Report of Independent Auditors

                    Consolidated Statements of Income for
                    the years ended October 31, 1994, 1995 and
                    1996

                    Consolidated Balance Sheets at October
                    31, 1995 and 1996

                    Consolidated Statements of Stockholders'
                    Equity for the years ended October 31, 1994,
                    1995 and 1996
 
                    Consolidated Statements of Cash Flows
                    for the years ended October 31, 1994, 1995
                    and 1996

                    Notes to Consolidated Financial
                    Statements

               (b)  Pro Forma Financial Information
                    Introductory Information

                    Unaudited Pro Forma Statement of Income
                    for the year ended December 31, 1996

                    Unaudited Pro Forma Balance Sheet at
                    December 31, 1996
                    Notes to Unaudited Pro Forma Financial
                    Information
           
(b)  Pro Forma Financial Information


                        Introduction
                       (in thousands)
                              
Acquisition of Amicon
On  December 31, 1996, Millipore acquired the net assets  of
the  Amicon Separation Science Business of W.R. Grace &  Co.
(Amicon)  for  approximately  $129,265  in  cash,  including
transaction costs.  This acquisition was accounted for as  a
purchase,   and   accordingly,  the   purchase   price   was
preliminarily  allocated  to the identifiable  tangible  and
intangible assets based on the estimated fair market  values
of  those  assets.   The Company also  accrued  $27,000  for
additional  costs  associated  with  the  acquisition.   The
purchase  price was allocated to the net assets acquired  as
follows:

Current assets                 $  30,328
Property, plant and equipment     15,474
Intangible assets                 50,753
Purchased     Research      &     68,311
Development
Other assets                         596
Current liabilities              (9,197)
                               $ 156,265
                              
Identifiable  intangible  assets included  trade  names  and
patented   and   unpatented  complete   technology.    These
intangible  assets  will be amortized over  their  estimated
useful  lives ranging from five to thirty years.  The  value
assigned  to purchased research and development,  for  which
technical feasibility had not been achieved, was charged  to
earnings  in  the fourth quarter of 1996 and is included  in
the  historical Millipore statement of income for  the  year
ended December 31, 1996.

Millipore financed the acquisition of Amicon by drawing down
funds  on  a  90  day $250,000 bridge loan  which  was  made
available  to  the  Company as temporary  financing  pending
finalization  in  January,  1997  of  a  long-term  $450,000
revolving credit facility.  Borrowings required to  complete
the  acquisition  of  $124,397 are included  in  Millipore's
historical balance sheet at December 31, 1996.

As  this acquisition was completed on the last business  day
of  1996,  the assets acquired and liabilities  assumed  are
included in Millipore's historical balance sheet at December
31,  1996. Amicon had a December 31 year end, which  is  the
same  year  end  as  Millipore.   The  unaudited  pro  forma
statement of income for the year ended December 31, 1996 was
prepared  as if the acquisition had occurred on  January  1,
1996.

Acquisition of Tylan General, Inc.
On January 22, 1997, Millipore successfully completed a cash
tender  offer  for all of the outstanding  common  stock  of
Tylan  General,  Inc. (Tylan) for $16.00 per  share.   Tylan
became a wholly owned subsidiary of Millipore on January 27,
1997.   The  purchase  price was  $133,000  and  was  funded
through  the  Company's $450,000 revolving  credit  facility
discussed  above.   In addition, Millipore  assumed  all  of
Tylan's  outstanding  debt, net of cash.   This  acquisition
will  be  accounted for as a purchase by  Millipore  in  the
first quarter of 1997.

As  part  of the purchase accounting to be recorded  in  the
first quarter of 1997, Millipore expects to record a non-tax
deductible  charge in the range of $50,000 to  $100,000  for
purchased  research  and  development  for  which  technical
feasibility  has  not  yet  been achieved.   Millipore  also
expects to record an accrual in the range of $35,000 in  the
first  quarter  of  1997  for transaction  and  other  costs
directly  associated  with  the acquisition.   No  purchased
research  and  development expense  relating  to  the  Tylan
acquisition has been included in the pro forma statement  of
income for the year ended December 31, 1996.

Millipore  has  reflected the high end of its  estimate  for
purchased  research  and development expense,  $100,000,  as
well   as  its  estimate  for  costs  associated  with  this
acquisition of $35,000 as pro forma adjustments to  retained
earnings  and  accrued expenses, respectively,  in  the  pro
forma  balance  sheet at December 31,  1996.   In  addition,
Millipore has assumed intangible assets acquired are $18,646
and  has reflected this amount as a pro forma adjustment  in
the pro forma balance sheet at December 31, 1996.

The  unaudited pro forma balance sheet at December 31,  1996
was prepared as if the acquisition of Tylan had occurred  on
December  31,  1996.  The unaudited pro forma  statement  of
income for the year ended December 31, 1996 was prepared  as
if the acquisition of Tylan had occurred on January 1, 1996.

Tylan  had  an  October  31  year  end.   For  purposes   of
presenting  an unaudited pro forma statement of  income  for
the year ended December 31, 1996, the historical results  of
Tylan's operations for the year ended October 31, 1996  have
been included with Millipore's results of operations for the
year  ended  December 31, 1996.  For purposes of  presenting
the  pro  forma  balance  sheet at December  31,  1996,  the
historical accounts of Tylan at October 31, 1996  have  been
included with Millipore's balance sheet accounts at December
31,  1996.   The impact resulting from these differences  in
periods is not material.

The  unaudited pro forma financial statements  are  intended
for   informational   purposes  and  are   not   necessarily
indicative  of  the  future  financial  position  or  future
results  of  operations  of  the  combined  entity.    These
condensed pro forma financial statements should be  read  in
conjunction with the Annual Report on Form 10-K for the year
ended  December  31,  1996,  and  the  historical  financial
statements of Amicon and Tylan filed as part of this  report
on Form 8-K.
                    Millipore Corporation
           Unaudited Pro Forma Statement of Income
            For the year ended December 31, 1996
            (in thousands, except per share data)
                              


                                                                          
                 Historical                       Pro Forma
                 Millipore  Amicon    Tylan       Adjustments     Results
                                                Amicon   Tylan    
                                                                 
Net Sales        $618,735 $ 57,481  $148,339                     $824,555
Cost of Sales     249,443   25,491    88,938   2,500(A) 5,000(E)  371,372
Gross Profit      369,292   31,990    59,401                      453,183
                                                                 
Selling,                                                         
general and       202,140   20,748    43,512   2,537(B) 1,240(F)  270,177
administrative         
expenses
                                                                 
Research and                                                     
Development       38,429     5,252    11,807                       55,488
Expenses
                                                                 
Purchased                                                        
Research and      68,311         -         -        -         -    68,311
Development
Expense
                                                                 
Operating         60,412     5,990     4,082  (5,037)  (6,240)     59,207
Income                                     
                                                                 
Gain on sale of                                                  
equity             5,329         -         -                        5,329
securities
                                                                 
Interest          (8,718)     (378)   (1,811) (8,708)  (9,310)    (28,925)
Expense, net                                      (C)      (G)
                                                  
                                                                 
Other expense          -    (1,010)     (993)            728(H)    (1,275)
                                                                 
Income before                                                    
income taxes      57,023     4,602     1,278  (13,745) (14,822)    34,336
                                                                 
Provision for     13,401     1,868       483   (4,811)  (3,004)     7,937
income taxes                                       (D)      (I)
                                                                 
Extraordinary                                                    
Item, net of           -         -      (224)                        (224)
income tax
benefit
                                                                 
Net Income       $43,622    $2,734      $571  $(8,934)  $(11,818) $26,175
                            
Net Income per                                                   
common share      $1.00                                             $0.60
                                                                 
Weighted                                                         
average common                                                   
shares            43,602                                           43,602
outstanding
                                                                 
                                                                 
                    Millipore Corporation
              Unaudited Pro Forma Balance Sheet
                      December 31, 1996
                       (in thousands)

                                     Historical      Pro Forma
                                 Millipore  Tylan    Adjustments Results
                                   
Assets                                                       
                                                             
Current assets:                                             
   Cash                          $4,010   $2,664                  $6,674
   Short-term investments        42,860        -                  42,860
   Accounts receivable          151,653   21,642                 173,295
   Inventories                  106,410   28,899    5,000(A)     140,309
   Other current assets           6,979    5,549                  12,528
     Total current assets       311,912   58,754                 375,666
                                                             
Property, plant and equipment,  203,017   27,185                 230,202
net
Intangible assets                58,866   2,784    15,862(B)     77,512
Deferred income taxes            69,086     866                  69,952
Other assets                     40,011   1,756                  41,767
                                                             
Total assets                   $682,892 $91,345   $20,862      $795,099
                                                             
Liabilities and Shareholders'                                
Equity
                                                             
Current liabilities:                                         
   Notes payable               $101,546    $8,411              $109,957
   Accounts payable              34,404    14,204                48,608
   Accrued expenses              57,011     6,470     35,000(C)  98,481
   Accrued divestiture costs      3,604      -                    3,604
   Dividends payable              3,899      -                    3,899
   Accrued retirement plan        4,705      -                    4,705
   contributions
   Accrued income taxes payable  11,231      412                 11,643
     Total current liabilities  216,400   29,497      35,000    280,897
                                                             
Long-term debt                  224,359   14,193     133,000(D) 371,552
Other liabilities                24,528      517                 25,045
Shareholders' equity:                                        
   Common stock                  56,988        8          (8)(E) 56,988
   Additional paid-in capital     8,800   37,544     (37,544)(E)  8,800
                                                   
   Unrealized gain on securities  9,536        -                  9,536
   available for sale
   Retained earnings            548,598   10,053    (110,053)(F)448,598
   Notes receivable - stock           -     (333)        333(E)       -
   purchases
   Translation adjustments       (8,280)    (134)        134(E)  (8,280)
                                615,642   47,138    (147,138)   515,642
                                              
   Less:  Treasury stock at cost(398,037)      -               (398,037)
                                                  
     Total shareholders' equity  217,605  47,138    (147,138)   117,605
                         
                                                                  
Total liabilities and           $682,892 $91,345     $20,862   $795,099
shareholders' equity
                    Millipore Corporation
      Notes to Unaudited Pro Forma Financial Statements
                       (in thousands)
                              

I.)  Pro Forma Adjustments to Millipore Corporation's 1996
     Statement of Income:

     Related to Amicon Acquisition:

         (A)Record write-off of acquired inventory written
         up from Amicon's historical cost to net realizable
         value on the date of acquisition.

         (B)Record twelve months amortization expense on
         $50,753 of intangible assets being amortized over
         their average estimated useful lives of 20 years.

         (C)Record twelve months interest expense assuming
         borrowings of $124,397 and an annual interest rate
         of 7 percent.

         (D)Record income tax benefit of pro forma
         adjustments using an effective income tax rate of
         35 percent, which is Millipore's marginal tax
         rate.

         Related to Tylan Acquisition:

         (E)Record estimated write-off of acquired
         inventory written up from Tylan's historical cost
         to net realizable value on the date of
         acquisition.

         (F)Record twelve months amortization expense on an
         estimated $18,646 of intangible assets being
         amortized over their average estimated useful
         lives of 15 years.

         (G)Record twelve months interest expense assuming
         borrowings of $133,000 and an annual interest rate
         of 7 percent.

         (H)Eliminate $728 of historical Tylan expenses for
         costs to defer potential unsolicited attempt to
         acquire Tylan.  These costs were included in other
         expense in the 1996 historical Tylan Statement of
         Income.

         (I)Record income tax benefit of pro forma
         adjustments G and H using an effective income tax
         rate of 35 percent, which is Millipore's marginal
         tax rate.  Pro forma adjustments E and F are not
         tax effected as neither item is tax deductible.


II.) Pro Forma Adjustments to Millipore Corporation Balance
     Sheet at December 31, 1996:

         (A)Record estimated write-up of inventory in Tylan
         acquisition from Tylan's historical cost to net
         realizable value on the date of acquisition.

         (B)Intangible Assets - adjustments consist of the
         following:

          - Recording of estimated Intangible Assets in
                    Tylan Acquisition             $18,646
          -         Eliminate existing Tylan Intangible
                    Assets                         (2,784)
                    Total Pro Forma Adjustment    $15,862

         (C)        Record accrual for estimated
         transaction costs to be incurred in the
         acquisition of Tylan as well as estimated
         additional costs associated with the acquisition.

         (D)        Record borrowings for $133,000 to
         acquire all of the outstanding shares of common
         stock of Tylan

         (E)        Eliminate historical shareholders'
         equity accounts of Tylan

         (F)        Retained Earnings - adjustment consists
         of the following:

          -         Elimination of Tylan's historical
                    Retained Earnings                      $(10,053)
          -         Estimated Purchased Research and
                    Development expense arising from Tylan
                    acquisition                            (100,000)

                                                          ($110,053)
                         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
                               (Registrant)




Date:  March 17, 1997     /s/ Geoffrey Nunes
                          Geoffrey Nunes
                          Senior Vice President