Exhibit 21
THERMO ELECTRON CORPORATION
Subsidiaries of the Registrant
As of February 28, 2005, Thermo Electron owned the following companies.
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STATE OR
JURISDICTION OF PERCENT OF
NAME INCORPORATION OWNERSHIP
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Thermo Electron Australia Pty Limited Australia 100
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Thermo Electron A/S Denmark 100
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Thermo Electron Holdings SAS France 100
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Jouan S.A.S. France 100
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Jouan Limited England 100
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Jouan Industries SAS France 100
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SCI du 10 rue Dugay Trouin France 98
(2% owned by Jouan Industries SAS)
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Jouan Italia srl Italy 99.95
(.05% owned by Jouan Industries SAS)
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ALC France S.A.S. France 100
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Jouan Robotics SAS France 100
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Jouan Nederland BV Netherlands 100
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Jouan Nordic AS Denmark 100
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Jouan A.S. Czech Republic 100
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Jouan, Inc. Virginia 100
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Laboratory Management Systems, Inc. Delaware 100
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U.S. Counseling Services, Inc. Wisconsin 100
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Thermo CRS Holdings Ltd. Canada 100
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Thermo CRS Ltd. Canada 100
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Robocon GmbH Austria 100
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CRS Robotics France EURL France 100
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Thermo Coleman Corporation Delaware 100
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Thermo Electron North America LLC Delaware 100
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Fi SA France 100
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Thermo Hypersil-Keystone Inc. Pennsylvania 100
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Loftus Furnace Company Pennsylvania 100
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NAPCO, Inc. Connecticut 100
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Staten Island Cogeneration Corporation New York 100
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Thermo Electron Export Inc. Barbados 100
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Thermo Foundation, Inc. Massachusetts 100
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Thermo Electron Financial Services Inc. Delaware 100
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Russell pH Limited Scotland 100
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Thermo Keytek LLC Delaware 100
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Thermedics Detection de Argentina S.A. Argentina 100
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Thermo Detection de Mexico, S.A. de C.V. Mexico 100
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Thermo Detection Limited England 100
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Goring Kerr Detection Limited England 100
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Goring Kerr (NZ) Limited New Zealand 100
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Thermo Sentron Canada Inc. Canada 95
(additionally, 5% of the shares are owned directly by Thermo Electron Corporation)
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Thermo Ramsey S.A. Spain 100
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Thermo Ramsey Inc. Massachusetts 100
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Thermo Re, Ltd. Bermuda 100
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Thermo Ramsey Pty Ltd Australia 100
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Thermo Electron (Proprietary) Limited South Africa 100
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Comtest Limited England 100
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KFP Operating Company, Inc. Delaware 100
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KFx Fuel Partners, L.P. Delaware 100
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Star/RESC LLC Texas 75*
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Thermo Electron Metallurgical Services, Inc. Texas 100
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RealFlex Systems Inc. Texas 100
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STATE OR
JURISDICTION OF PERCENT OF
NAME INCORPORATION OWNERSHIP
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Thermo Gamma-Metrics Pty Ltd Australia 100
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Thermo Electron (Chile) S.A. Chile 100
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Thermo Electron India Private Limited India 90
(an additional 10% owned by Thermo Gamma-Metrics LLC)
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Thermo MF Physics Corporation Delaware 100
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ONIX Systems Inc. Delaware 100
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Thermo Process Instruments GP, LLC Delaware 100
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Thermo Process Instruments LP Texas 99.9
(an additional 0.10% owned by Thermo Process Instruments GP, LLC)
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Thermo Measuretech Canada Inc. Canada 100
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Onix Holdings Limited England 100
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CAC Limited England 100
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Thermo Measurement Ltd England 100
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Peek Measurement Limited England 100
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Thermo Onix Limited England 100
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Thermo ONIX B.V. Netherlands 100
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Thermo Electron Scientific Instruments Corporation Wisconsin 100
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Thermo Optek (Australia) Pty Ltd. Australia 100
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Fuji Partnership Japan 80.2170
(19.783% of partnership is owned directly by Thermo Forma Inc.)
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Thermo Electron German Holdings Inc. Delaware 35.4
(7.2% of shares are owned directly by TDI Inc. of VA, 6.6% of shares
are owned directly by Thermo Gamma-Metrics LLC, 19.3% of shares are
owned directly by Thermo Electron Corporation, 31.5% of shares are owned
directly by Thermo Finnigan LLC.)
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FI Instruments Inc. Delaware 100
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Thermo Elemental Inc. Massachusetts 100
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Thermo Electron SA Switzerland 100
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Thermo Electron Corporation (Pty) Ltd. South Africa 100
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Thermo Electron Austria Wissenschaftliche Gerate GmbH Austria 100
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Baird Do Brazil Representacoes Ltda. Brazil 100
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Thermo Instruments (Canada) Inc. Canada 100
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Life Sciences International Limited England 100
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Fastighets AB Skrubba Sweden 100
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Thermo Optek Limited England 100
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VG Systems Limited England 100
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VG Systems Japan K.K. Japan 100
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Norlab Instruments Limited Scotland 100
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Thermo Electron Manufacturing Limited England 100
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Thermo Nicolet Limited England 100
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Thermo Elemental Limited England 100
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Nuclear Enterprises Limited Scotland 100
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Thermo Finnigan Limited England 100
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Thermo Hypersil Limited England 100
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Thermo Radiometrie Limited England 100
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Thermo Electron Limited England 100
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Thermo Electron Weighing & Inspection Limited England 100
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Thermo Sentron Limited England 100
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Hitech Electrocontrols Limited England 100
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Thermo Allen Coding Limited England 100
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Thermo Electron (Management Services) Limited England 100
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Life Sciences International Holdings BV Netherlands 100
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Bioanalysis Labsystems, S.A. Spain 90
(10% owned by Thermo Electron B.V.)
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Thermo Electron Oy Finland 100
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STATE OR
JURISDICTION OF PERCENT OF
NAME INCORPORATION OWNERSHIP
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Thermo Labsystems (Shanghai) Co. Ltd. China 100
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Thermo Electron LLS India Private Limited India 100
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JSC Thermo Electron Russia 100
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Labinstruments Oy Finland 100
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Life Sciences International (Poland) SP z O.O Poland 100
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Labsystems Christioan-Gassauer-Fleissner GmbH Austria 100
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Thermo Electron SpA Italy 100
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Thermo Ramsey Italia S.r.l. Italy 100
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Thermo Ramsey TecnoEuropa S.r.l. Italy 100
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Thermo Electron Polska Sp. z o.o. Poland 50
(50% owned by Thermo Electron Weighing & Inspection Limited)
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Comdata Services Limited England 50
(50% owned by Savant Instruments Limited)
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Lipshaw England 99.998
(.002% by Helmet Securities Limited)
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Luckham Limited England 99.999
(.001% by Helmet Securities Limited)
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Phicom Limited England 99.960
(.040% by Helmet Securities Limited)
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Southions Investments Limited England 99.999
(.001% by Helmet Securities Limited)
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Sungei Puntar Rubber Estate Limited England 99.918
(.082% by Helmet Securities Limited
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Westions Limited England 99.950
(.050% by Helmet Securities Limited)
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Forma Scientific Limited England 99
(1% owned by Helmet Securities Limited)
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Thermodorm (1) Limited England 99.980
(.020% by Helmet Securities Limited)
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Shandon Southern Instruments Limited England 99.99
(.01% Helmet Securities Limited)
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Savant Instruments Limited England 99.00
(1.000% by Comdata Services Limited)
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Helmet Securities Limited England 99.99
(.001% owned by Comdata Services Limited)
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International Equipment Company Limited England 98.1
(1.9% by Thermo IEC Inc.)
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Life Sciences International Kft Hungary 100
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Life Sciences International, Inc. Pennsylvania 100
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LSI (US) Inc. Delaware 100
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Commendstar Limited England 100
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Consumer & Video Holdings Limited England 99.996
(.004% owned by Helmet Securities Limited)
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Video Communications Limited England 99.999
(.001 Helmet Securities Limited)
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Greensecure Projects Limited England 100
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Hybaid Limited England 100
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Equibio Limited England 100
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Omnigene Limited England 58.47
(41.53% owned by Thermo Electron (Management Services) Limited)
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Southern Instruments Holdings Limited England 99.999
(.001% owned by Helmet Securities Limited)
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Finishlong Limited England 99.997
(.003% owned by Helmet Securities Limited)
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Thermo Kevex X-Ray Inc. Delaware 100
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Thermo NESLAB Inc. New Hampshire 100
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STATE OR
JURISDICTION OF PERCENT OF
NAME INCORPORATION OWNERSHIP
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NITI Corporation Wisconsin 100
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ThermoSpectra Limited England 100
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Thermo Electron Sweden Forvaltning AB Sweden 100
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Spectra-Physics AB Sweden 100
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Spectra-Physics Holdings USA, Inc. Delaware 100
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Spectra-Physics Holdings Limited England 100
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Saroph Sweden AB Sweden 100
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Saroph B.V. Netherlands 100
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Thermo Electron Sweden AB Sweden 100
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Thermo Life Sciences AB Sweden 100
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Laser Analytical Systems, Inc. California 100
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Thermo Finnigan LLC Delaware 100
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Thermo Finnigan Australia Pty. Ltd. Australia 100
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Finnigan Properties, Inc. Delaware 100
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Thermo Gamma-Metrics LLC Delaware 100
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TMOI Inc. Delaware 100
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Thermo Electron (China) Holding Limited England 100
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Thermo Electron (Shanghai) Technologies and Instruments Co., Ltd. China 100
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Thermo Electron (Shanghai) Instruments Co. Ltd. China 100
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H.D. Technologies England 99
(1% owned by Savant Instruments Limited)
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Thermo Forma Inc. Delaware 100
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Thermo IEC Inc. Delaware 100
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Thermo Electron (Hong Kong) Limited Hong Kong 100
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Thermo Life Science International Trading (Tianjin) Co., Ltd. China 100
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Thermo Electron Schweiz AG Switzerland 100
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Thermo Electron K.K. Japan 100
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Fisons Instruments NV Belgium 100
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Thermo Instruments S.A. Spain 100
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Thermo BioAnalysis Corporation Delaware 94.9
(5.1% owned by Life Sciences International Limited)
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Thermo LabSystems S.A. Spain 100
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Thermo Holding European Operations Corp. Delaware 85
(an additional 15% is owned by Thermo Electron German Holdings Inc.)
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Thermo Luxembourg Holding S.a.r.l. Luxembourg 100
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Thermo TLH (UK) Limited England 100
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Thermo Electron Holding BV Netherlands 100
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Environmental Processing Manufacturing BV Netherlands 100
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Thermo Electron B.V. Netherlands 100
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Van Hengel Holding B.V. Netherlands 100
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Thermo Optek S.A. Spain 100
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Thermo Finance Company BV Netherlands 100
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Thermo Electron B.V. B.A. Belgium 93.5
(6.5% owned by Thermo Electron Holding BV)
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Thermo Finnigan S.A. Spain 100
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ThIS Gas Analysis Systems B.V. Netherlands 100
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Thermo Euroglas B.V. Netherlands 100
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Thermo Electron Deutschland Verwaltvngs GmbH Germany 100
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Valerian Ltd. Gibraltar 100
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Thermo Luxembourg S.a.r.l. Luxembourg 99.17
(.83% owned by Thermo Euroglas B.V.)
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Thermo Electron Deutschland GmbH & Co. KG Germany 100
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STATE OR
JURISDICTION OF PERCENT OF
NAME INCORPORATION OWNERSHIP
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Thermo Electron IT Services GmbH Germany 100
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Thermo Electron GmbH Germany 100
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Thermo Electron (Erlangen) GmbH Germany 89.96
(additionally 10.04% of the shares
are owned directly by Thermo
Electron Corporation)
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Thermo Electron (Bremen) GmbH Germany 90
(additionally 10% of the shares are
owned directly by Thermo Electron
Corporation)
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Thermo Electron (Karlsruhe) GmbH Germany 90
(additionally, 10% of the shares are
owned directly by Thermo Electron
Scientific Instruments Corporation)
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Thermo Electron (Oberhausen) GmbH Germany 100
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ESM Andersen Instruments GmbH Germany 100
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Thermo TLH L.P. Delaware 99.99*
(additionally 0.01% is owned by Thermo TLH (U.K.) Limited
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Thermo BioStar Inc. Delaware 100
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Thermo DMA Inc. Texas 100
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Thermo Electron Singapore Pte Ltd Singapore 100
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TDI Inc. of VA Virginia 100
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Thermo Shandon Limited England 100
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Thermo Shandon Inc. Pennsylvania 100
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Thermo BioAnalysis Limited England 100
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Thermo Fast U.K. Limited England 100
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Thermo Projects Limited England 100
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Toolquip International Limited England 100
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Labquip International Limited England 100
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Thermo Projects Limited BVI British Virgin 100
Islands
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Simplepaper Limited England 100
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Thermo Informatics Asia Pacific Pty Ltd. Australia 100
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Thermo LabSystems Inc. Massachusetts 100
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InnaPhase Group Holdings, Inc. Delaware 100
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InnaPhase Limited England 100
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InnaPhase, Inc. Canada 100
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Thermo Trace Ltd. Australia 100
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Trace BioSciences Pty. Ltd. Australia 100
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Trace BioSciences (NZ) Limited New Zealand 100
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Thermo Electron SA. (29.9% owned by Thermo Electron Scientific Instruments Corporation France 47.52
and 22.58 by Thermo BioAnalysis Corporation)
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Thermo Instruments SAS France 100
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Rutter Instrumentation S.A.R.L. France 100
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Thermo Environmental Instruments Inc. California 100
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Thermo Electron (Calgary) Limited Canada 100
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Thermo Orion Inc. Massachusetts 100
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Thermo Orion Puerto Rico Inc. Delaware 100
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Thermo Instruments do Brazil Ltda. Brazil 100
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Thermo CIDTEC Inc. New York 100
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Thermo Power Corporation Massachusetts 100
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ACI Holdings Inc. New York 100
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Lancaster Laboratories LLC Delaware 100
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Thermo Securities Corporation Delaware 100
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STATE OR
JURISDICTION OF PERCENT OF
NAME INCORPORATION OWNERSHIP
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Thermo Eberline LLC Delaware 51
(49% owned by Thermo BioAnalysis Corporation)
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ThermoLase LLC Delaware 100
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ThermoLase Japan L.L.C. Wyoming 50*
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Trex Medical Corporation Delaware 100
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Thermo Corporation Delaware 100
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* Joint Venture/Partnership
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