Exhibit 21.1 ================================================= =================== ================== Subsidiary Jurisdiction of Branch Office Incorporation ================================================= =================== ================== BCL Acquisition Corp. Delaware - ------------------------------------------------- ------------------- ------------------ BCL Holding Corp. Delaware - ------------------------------------------------- ------------------- ------------------ Bioprocessing Corporation Ltd. United Kingdom - ------------------------------------------------- ------------------- ------------------ Bioprocessing Limited United Kingdom - ------------------------------------------------- ------------------- ------------------ Nihon Millipore K.K. Massachusetts - ------------------------------------------------- ------------------- ------------------ Millipore Asia Ltd. Delaware Taiwan, Malaysia - ------------------------------------------------- ------------------- ------------------ Millipore International Holding Company B.V. The Netherlands Japan - ------------------------------------------------- ------------------- ------------------ Millipore Dublin International Finance Company Ireland - ------------------------------------------------- ------------------- ------------------ Millipore Intertech (V.I.) Inc. Virgin Islands - ------------------------------------------------- ------------------- ------------------ Millipore AB Sweden - ------------------------------------------------- ------------------- ------------------ Millipore AG Switzerland - ------------------------------------------------- ------------------- ------------------ Millipore AS Norway - ------------------------------------------------- ------------------- ------------------ Millipore A/S Denmark - ------------------------------------------------- ------------------- ------------------ Millipore Australia Pty. Ltd. Australia - ------------------------------------------------- ------------------- ------------------ Millipore Bioscience Singapore Pte. Ltd. Singapore - ------------------------------------------------- ------------------- ------------------ Millipore (U.K.) Ltd. United Kingdom - ------------------------------------------------- ------------------- ------------------ Millipore B.V. The Netherlands - ------------------------------------------------- ------------------- ------------------ Millipore (Canada) Ltd. Canada - ------------------------------------------------- ------------------- ------------------ Millipore Biosciences Caribe, Ltd. Bermuda - ------------------------------------------------- ------------------- ------------------ Millipore China Ltd. Hong Kong - ------------------------------------------------- ------------------- ------------------ Millipore Cidra, Inc. Delaware - ------------------------------------------------- ------------------- ------------------ Millipore SAS France - ------------------------------------------------- ------------------- ------------------ Millipore Foundation Massachusetts - ------------------------------------------------- ------------------- ------------------ Millipore France Holding Co. BV The Netherlands - ------------------------------------------------- ------------------- ------------------ Millipore GesmbH Austria - ------------------------------------------------- ------------------- ------------------ Millipore GmbH Germany - ------------------------------------------------- ------------------- ------------------ Millipore Iberica S.A. Spain - ------------------------------------------------- ------------------- ------------------ Millipore Immoblier France - ------------------------------------------------- ------------------- ------------------ Millicorp Delaware - ------------------------------------------------- ------------------- ------------------ Millipore India Pvt. Ltd. India - ------------------------------------------------- ------------------- ------------------ Millipore Industria e Comercio Ltda. Brazil - ------------------------------------------------- ------------------- ------------------ Millipore Ireland B.V. The Netherlands Ireland - ------------------------------------------------- ------------------- ------------------ Millipore Kft Hungary - ------------------------------------------------- ------------------- ------------------ Millipore Korea Co., Ltd. Korea - ------------------------------------------------- ------------------- ------------------ Millipore OY Finland - ------------------------------------------------- ------------------- ------------------ Millipore Pacific Ltd. Delaware - ------------------------------------------------- ------------------- ------------------ Millipore SA de CV Mexico - ------------------------------------------------- ------------------- ------------------ Millipore SA/NV Belgium - ------------------------------------------------- ------------------- ------------------ Millipore S.p.A. Italy - ------------------------------------------------- ------------------- ------------------ Millipore S.R.O. Czech Republic - ------------------------------------------------- ------------------- ------------------ Minerva Insurance Co. Ltd. Bermuda - ------------------------------------------------- ------------------- ------------------ Millilux S.a.r.l. Luxembourg Ireland - ------------------------------------------------- ------------------- ------------------ Millipore S.a.r.l. Luxembourg - ------------------------------------------------- ------------------- ------------------ Vermeer Ireland - ------------------------------------------------- ------------------- ------------------ 1