Exhibit 21.1

SUBSIDIARIES OF MILLIPORE CORPORATION



|                                          |  |                             
|----------------------------------------- |  | ----------------------------
|Company Name                              |  | Jurisdiction of Organization
|                                          | 
|Amicon Ltd.                               |  | United Kingdom              
|                                          | 
|Bioprocessing Corporation Limited         |  | United Kingdom              
|                                          | 
|Bioprocessing Limited                     |  | United Kingdom              
|                                          | 
|Celliance Lawrence, Inc.                  |  | Delaware                    
|                                          | 
|Celliance Limited                         |  | United Kingdom              
|                                          | 
|Celliance Toronto, Inc.                   |  | Canada                      
|                                          | 
|Chemicon Australia                        |  | Australia                   
|                                          | 
|Chemicon Europe Limited                   |  | United Kingdom              
|                                          | 
|Cymbus Biotechnology Limited              |  | United Kingdom              
|                                          | 
|MicroSafe B.V.                            |  | Netherlands                 
|                                          | 
|Millilux S.a.r.L.                         |  | Luxembourg                  
|                                          | 
|Millipart S.a.r.L.                        |  | Luxembourg                  
|                                          | 
|Millipore (Canada) Ltd.                   |  | Canada                      
|                                          | 
|Millipore (Shanghai) Trading Company Ltd. |  | China                       
|                                          | 
|Millipore (U.K.) Ltd.                     |  | United Kingdom              
|                                          | 
|Millipore A/S                             |  | Denmark                     
|                                          | 
|Millipore AB                              |  | Sweden                      
|                                          | 
|Millipore AG                              |  | Switzerland                 
|                                          | 
|Millipore AS                              |  | Norway                      
|                                          | 
|Millipore Asia Ltd.                       |  | Delaware                    
|                                          | 
|Millipore Australia Pty. Ltd.             |  | Australia                   
|                                          | 
|Millipore B.V.                            |  | Netherlands                 
|                                          | 
|Millipore Bioscience Caribe Ltd.          |  | Bermuda                     
|                                          | 
|Millipore China Ltd.                      |  | Hong Kong                   
|                                          | 
|Millipore Cidra, Inc.                     |  | Delaware                    



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|                                               |  |               
|---------------------------------------------- |  | --------------
|Millipore Cork                                 |  | Ireland       
|                                               | 
|Millipore Dublin International Finance Company |  | Ireland       
|                                               | 
|Millipore GesmbH                               |  | Austria       
|                                               | 
|Millipore GmbH                                 |  | Germany       
|                                               | 
|Millipore Iberica S.A.                         |  | Spain         
|                                               | 
|Millipore Industria E Comercio Ltda.           |  | Brazil        
|                                               | 
|Millipore International Holding Company B.V.   |  | Netherlands   
|                                               | 
|Millipore Ireland B.V.                         |  | Netherlands   
|                                               | 
|Millipore Kft                                  |  | Hungary       
|                                               | 
|Millipore Korea Ltd.                           |  | Korea         
|                                               | 
|Millipore OY                                   |  | Finland       
|                                               | 
|Millipore Pacific Limited                      |  | Delaware      
|                                               | 
|Millipore S.A. de C.V.                         |  | Mexico        
|                                               | 
|Millipore S.A./N.V.                            |  | Belgium       
|                                               | 
|Millipore S.a.r.L.                             |  | Luxembourg    
|                                               | 
|Millipore S.p.A.                               |  | Italy         
|                                               | 
|Millipore S.R.O.                               |  | Czech Republic
|                                               | 
|Millipore SAS                                  |  | France        
|                                               | 
|Millipore Singapore Pte. Ltd.                  |  | Singapore     
|                                               | 
|Millipore Sp.z.o.o.                            |  | Poland        
|                                               | 
|Millipore UK Sub Limited                       |  | United Kingdom
|                                               | 
|Minerva Insurance Co. Ltd.                     |  | Bermuda       
|                                               | 
|Newport Bio Systems, Inc.                      |  | California    
|                                               | 
|Nihon Millipore K.K.                           |  | Japan         
|                                               | 
|NovAseptic Innovation A/S                      |  | Norway        
|                                               | 
|NovAseptic UK Limited                          |  | United Kingdom
|                                               | 
|Protein Separations Ltd.                       |  | United Kingdom
|                                               | 
|Serologicals European Holdings Limited         |  | United Kingdom
|                                               | 
|Serologicals Global Holdings Company Limited   |  | United Kingdom
|                                               | 
|Serologicals Hong Kong Limited                 |  | China         
|                                               | 
|Serologicals UK Holdings Company Limited       |  | United Kingdom
|                                               | 
|Upstate Gmbh                                   |  | Germany       
|                                               | 
|Upstate Ion Channel Discovery Group Limited    |  | United Kingdom
|                                               | 
|Upstate Limited                                |  | United Kingdom
|                                               | 
|Upstate USA, Inc.                              |  | New York      



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