EXHIBIT 21
THERMO ELECTRON CORPORATION
Subsidiaries of the Registrant
As of February 28, 2003, Thermo Electron Corporation owned the following
companies:
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STATE OR
JURISDICTION OF PERCENT OF
NAME INCORPORATION OWNERSHIP
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Thermo CRS Holdings Ltd. Canada 100
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Thermo CRS Ltd. Canada 100
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CRS Robotics Inc. Michigan 100
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Robocon GmbH Austria 100
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CRS Robotics France SARL France 100
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Thermo Coleman Corporation Delaware 100
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Coleman Services Incorporated Delaware 100
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Thermo Information Solutions Inc. Delaware 100
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Peter Brotherhood Holdings Ltd. England 100
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Aircogen Ltd. England 80
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Peter Brotherhood Limited England 100
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Peter Brotherhood Pension Fund Trustees Ltd. England 100
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Thermo Electron Realty Limited England 100
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Thermo Holdings Limited England 100
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Thermo Electron, S.A. de C.V. Mexico 100
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Fi SA France 100
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Gulf Precision, Inc. Arizona 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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North East Surgical Tool Corp. Massachusetts 100
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Staten Island Cogeneration Corporation New York 100
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TE Great Lakes Inc. Michigan 100
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TEC Cogeneration Inc. Florida 100
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South Florida Cogeneration Associates Florida 50*
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North County Resource Recovery Associates California 100*
(50% of which is owned directly by
Thermo Securities Corporation)
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Thermo Electron Export Inc. Barbados 100
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Thermo Foundation, Inc. Massachusetts 100
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Thermo Leasing Corporation Delaware 100
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Thermo Capital Company LLC Delaware 50
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Thermo Detection Inc. Delaware 100
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Thermo Orion Inc. Massachusetts 100
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Orion Research Limited England 100
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Thermo Orion Puerto Rico 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 99
(additionally 1% of the shares are owned
directly by Thermo Detection Inc.)
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Thermo Detection de Mexico, S.A. C.V. Mexico 100
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Thermo Detection Limited England 100
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Thermedics Detection Scandinavia AS Norway 100
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1
THERMO ELECTRON CORPORATION
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Thermo Allen Coding Limited England 100
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Thermo Allen Coding Corporation Delaware 100
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Thermo Electron Weighing & Inspection Limited England 100
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Best Checkweighers Limited England 100
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Intertest (UK) 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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Ramsey France S.A.R.L. France 100
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Allen France France 100
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Thermo Ramsey S.A. Spain 100
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Ramsey Italia S.R.L. Italy 100
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Thermo Ramsey TecnoEuropa S.r.l. Italy 100
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Thermo Ramsey Inc. Massachusetts 100
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Xuzhou Ramsey Technology Development Co., Limited China 50*
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Thermo Sentron Australia Pty. Ltd. Australia 100
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Thermo Sentron Limited England 100
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Hitech Electrocontrols Limited England 100
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Hitech Licenses Limited England 100
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Hitech Metal Detectors Ltd. England 100
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Westerland Engineering Ltd. England 100
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Westerland Limited England 100
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Thermo Sentron (South Africa) Pty. Ltd. South Africa 100
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Thermo Voltek Europe B.V. Netherlands 100
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Comtest Italia S.R.L. Italy 100
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Comtest Limited England 100
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UVC Realty Corp. New York 100
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Thermo Administrative Services Corporation Delaware 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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Thermo Electron of Maine, Inc. Maine 100
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Gorbell/Thermo Electron Power Company Maine 80*
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Star/RESC LLC Texas 75
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Thermo Electron Foundation, Inc. Massachusetts 100
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Thermo Electron Metallurgical Services, Inc. Texas 100
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Thermo Eberline Corporation New Mexico 100
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Thermo Life Sciences Limited England 100
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Denley Instruments Limited England 100
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Life Sciences International Limited England 100
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Thermo Electron (Management Services) Limited England 100
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Comdata Services Limited England 100
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Lipshaw Limited England 100
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Luckham Limited England 100
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Phicom Limited England 100
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Southions Investments Limited England 100
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Sungei Puntar Rubber Estate Limited England 100
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Westions Limited England 100
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Whale Scientific Limited England 100
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Forma Scientific Ltd. England 100
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Life Sciences (Europe) Limited England 100
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E-C Apparatus Ltd. England 100
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Shandon (Germany) Ltd. England 100
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Savant Instruments Ltd. England 100
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2
THERMO ELECTRON CORPORATION
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Helmet Securities Limited England 100
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International Equipment Company Limited England 100
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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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LSI North America Service Inc. Delaware 100
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Life Sciences International Holdings BV Netherlands 100
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Thermo Labsystems OY Finland 100
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Thermo BioAnalysis S.A. Spain 100
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Thermo Labsystems (Shanghai) Co. Ltd. China 90
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Thermo Labsystems India Pvt. Ltd. India 100
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Thermo Clinical Labsystems Oy Finland 100
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Labsystems (Hong Kong) Limited Hong Kong 99
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JSC Thermo Labsystems Russia 95
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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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Britlowes Limited England 100
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Commendstar Limited England 100
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Consumer & Video Holdings Limited England 100
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Video Communications Limited England 100
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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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Cell One S.A.R.L. France 100
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Labsystems Ges mbH Austria 100
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Omnigene Limited England 58.5
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Shenbridge Limited England 100
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Southern Instruments Holdings Limited England 100
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Finishlong Ltd. England 100
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Gamma-Metrics Minerals Pty Ltd. Australia 100
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Thermo Gamma-Metrics Inc. California 100
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Thermo Electron India Private Limited India 100
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Thermo MF Physics Corporation Delaware 100
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Thermo Radiometrie Corporation Delaware 100
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Radiometrie U.S.A., Inc. California 100
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Thermo Radiometrie Limited England 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 0.1% of Thermo Process Instruments LP is owned by Thermo Process
Instruments GP, LLC)
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Thermo Measuretech Canada Inc. Canada 100
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Thermo Onix Holdings Limited England 100
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CAC UK Limited England 100
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Thermo Measurement Limited England 100
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Peek Measurement Limited England 100
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Sarasota Data Products Limited England 100
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Sarasota Instrumentation 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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VG Gas Analysis Limited England 100
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Quadropols Limited England 100
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VG Systems Japan K.K. Japan 100
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3
THERMO ELECTRON CORPORATION
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Thermo Projects OY Finland 100
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Thermo Electron Scientific Instruments Corporation Wisconsin 100
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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 Radiometrie Corporation, 19.3% of shares
are owned directly by Thermo Electron Corporation, 29.3% of shares
are owned directly by Thermo Finnigan LLC, 2.2% of shares are owned
directly by Thermo Detection Inc.)
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Thermo Vacuum Generators Inc. Delaware 100
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FI Instruments Inc. Delaware 100
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Thermo Spectronic Inc. Delaware 100
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SLM International Inc. Illinois 100
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Thermo Elemental Inc. Massachusetts 100
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A.R.L. Applied Research Laboratories S.A. Switzerland 100
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Fisons Instruments (Proprietary) Limited South Africa 100
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Thermo Electron Wissenschaftliche Gerate GesmbH Austria 100
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Baird Do Brazil Representacoes Ltda. Brazil 100
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Beijing Baird Analytical Instrument Technology Co. Limited China 100
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Thermo Cahn Corporation Wisconsin 100
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Mattson Instruments Limited England 100
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Thermo Optek Italia S.p.A. Italy 100
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Unicam S.A. Belgium 100
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Nicolet Japan K.K. Japan 100
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Thermo Optek Limited England 100
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Thermo VG Systems Limited England 100
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Norlab Instruments Limited England 100
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Thermo Electron Spectroscopy Limited England 100
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Thermo Elemental Limited England 100
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Unicam Export Limited England 100
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Nuclear Enterprises Limited England 100
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Planweld Holding Limited England 100
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Hilger Analytical Limited England 100
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Thermo Electron Limited England 100
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Thermo Nicolet Limited England 100
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Nippon Jarrell-Ash Co Ltd. Japan 100
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Thermo Instruments (Canada) Inc. Canada 100
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Unicam Analytical Inc. Canada 100
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Thermo Optek Materials Analysis (S.E.A.) Pte Limited Singapore 100
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Gould Instrument Systems, Inc. Ohio 100
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Gould & Nicolet S.A. France 95
(additionally, 5% of the shares are owned directly by
Thermo Electron Corporation)
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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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Nicolet Instrument Technologies Inc. Wisconsin 100
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Thermo Noran Inc. Wisconsin 100
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ThermoSpectra Limited England 100
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Nicolet Technologies Ltd. England 100
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Spectrace Instruments Inc. California 100
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Thermo Electron Sweden Forvaltning AB Sweden 100
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Spectra-Physics AB Sweden 99
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Spectra-Physics Holdings USA, Inc. Delaware 100
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Spectra-Physics Canada Ltd. Canada 100
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Spectra-Physics Holdings Ltd. England 100
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4
THERMO ELECTRON CORPORATION
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Decorex Limited England 100
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Spectra-Physics Holdings S.A. France 100
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Saroph B.V. Netherlands 100
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Spectra Precision (Asia) Pte. Ltd. Singapore 100
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Saroph Sweden AB Sweden 100
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Thermo Labsystems Sweden AB Sweden 100
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Thermo Finnnigan AB Sweden 100
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Thermo Instruments Nordic AB Sweden 100
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Thermo Life Sciences AB Sweden 100
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Thermo Radiometrie Oy Finland 100
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Thermo Nobel AB Sweden 100
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Nobel Electronique S.A.R.L. France 100
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Nobel Elektronikk A/S Norway 100
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AB Givareteknik Sweden 100
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Spectra-Physics, Inc. Delaware 100
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Laser Analytical Systems GmbH Germany 100
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Laser Analytical Systems, Inc. California 100
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Spectra-Physics Semiconductor Lasers, Inc. Delaware 100
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Spectra-Physics Laser Data Systems, Inc. Delaware 100
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Spectra-Physics France S.A. France 100
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Spectra-Physics GmbH Germany 100
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Spectra-Physics K.K. Japan 100
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Spectra-Physics Lasers B.V. Netherlands 100
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Spectra-Physics Limited England 100
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Spectra-Physics Lasers Ltd. England 100
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Thermo Finnigan LLC Delaware 100
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Finnigan MAT S.R.L. Italy 100
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Thermo Finnigan Ltd. England 100
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ThermoQuest AB Sweden 100
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Thermoquest Limited England 100
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Thermo Hypersil Limited England 100
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Finnigan MAT China, Inc. California 100
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Thermo Finnigan Australia Pty. Ltd. Australia 100
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Finnigan Mat Ltd. England 100
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Thermo Instruments Australia Pty. Limited Australia 100
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Finnigan Properties, Inc. Delaware 100
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Thermo Electron Business Trust Massachusetts 100
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TMOI Inc. Delaware 100
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Thermo Forma Inc. Delaware 100
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Thermo IEC Inc. Delaware 100
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Thermo Savant Inc. New York 100
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Thermo Masslab Limited England 100
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H.D. Technologies Limited England 100
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Life Sciences International (HK) Limited Hong Kong 100
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TMQ SEG (Hong Kong) Limited Hong Kong 100
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Thermo Finnigan Italia S.p.A. Italy 100
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Thermo Finnigan AG Switzerland 100
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ThermoQuest K.K. Japan 100
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Fisons Instruments NV Belgium 100
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Fisons Instruments K.K. Japan 100
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Thermo Haake Ltd. England 100
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Thermo Instruments S.A. Spain 100
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Thermo BioAnalysis Corporation Delaware 100
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5
THERMO ELECTRON CORPORATION
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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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Grond en Watersaneringstechniek Nederland B.V. Netherlands 100
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Thermo Electron Holding BV Netherlands 100
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Thermo Instruments NV Belgium 100
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Thermo Electron BV Netherlands 100
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Thermo Finance Company BV Netherlands 100
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Nicolet Technologies BV Netherlands 100
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Thermo Separation Products B.V. B.A. Belgium 100
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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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Thermo Luxembourg S.a.r.l. Luxembourg 100
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Thermo Electron Deutschland GmbH & Co. KG Germany 100
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Thermo BioSciences GmbH Germany 100
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Thermo Finnigan GmbH Germany 90
(additionally, 10% of the shares are owned
directly by Thermo Electron Corporation)
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Thermo Life Sciences GmbH Germany 100
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Thermo Hypersil GmbH Germany 100
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Thermo Finnigan GmbH Germany 100
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Thermo Nicolet GmbH Germany 100
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Thermo Haake GmbH Germany 90
(additionally, 10% of the shares are owned
directly by Thermo Electron Scientific
Instruments Corporation)
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ESM Andersen Instruments GmbH Germany 100
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ITC Grundstucksverwaltungs GmbH Germany 100
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ITC Grundstucksverwaltungs GmbH & Co. Germany 90
(additionally 10% of the shares are owned by
Thermo Securities Corporation)
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Thermo BLH GmbH Germany 100
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Thermo Shandon GmbH Germany 100
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Thermo Radiometrie GmbH Germany 90
(additionally 10% of the shares are owned
directly by Thermo Electron Corporation)
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ESM Eberline Instruments GmbH Germany 100
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Thermo LabSystems Vertriebs GmbH Germany 100
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Thermo Ramsey GmbH Germany 100
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Nobel Elektronik GmbH Germany 100
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Thermo Detection GmbH Germany 100
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ThermoSpectra GmbH Germany 100
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Gould Nicolet Messtechnik GmbH Germany 100
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Thermo NORAN GmbH Germany 100
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ThermoSpectra B.V. Netherlands 100
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Thermo TLH (U.K.) Limited England 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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DMA Latinoamericana S.A. de C.V. Mexico 50
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6
THERMO ELECTRON CORPORATION
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Labsystems (SEA) Pte. Ltd. Singapore 100
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Fastighets AB Skrubba Sweden 100
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Dynex Technologies spol. s.r.o. Czech Republic 100
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TDI Inc. of VA Virginia 100
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Labsystems, Inc. Delaware 100
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Thermo Projects Limited (BVI) England 100
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Thermo Bioanalysis Japan K.K. Japan 100
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Thermo Shandon Ltd. England 100
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Anglia Scientific Instruments Limited England 100
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Shandon Southern Instruments Limited England 100
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Thermo Shandon Inc. Pennsylvania 100
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E-C Apparatus Corporation Florida 100
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Whale Scientific Corporation Colorado 100
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ALKO Diagnostic Corporation Massachusetts 100
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Thermo BioAnalysis (Guernsey) Ltd. Channel Islands 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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Thermo LabSystems Limited England 100
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Toolquip Group Limited England 100
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Toolquip International Limited England 100
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Medquip International Limited England 100
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Labquip International Limited England 100
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Simple Paper Limited England 100
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Shockblock Limited England 100
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Thermo Electron Holding France SA. (Additionally owned by 47.52% by Thermo Electron France 22.59
Corporation and 29.9% owned by Thermo Electron Scientific Instruments Corporation)
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Thermo VG Scientific France 100
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Thermo Finnigan France France 100
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Finnigan Automass S.A. France 100
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Thermo Hypersil S.A. France 100
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Konelab SA France 100
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Shandon France S.A. France 100
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Thermo Radiometrie France 100
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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 Optek EURL France 100
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Thermo LabSystems S.A.R.L. France 100
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Rheo S.A. France 100
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Labsystems S.A. France 100
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Thermo LabSystems (Australia) Pty Limited Australia 100
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Thermo LabSystems Inc. Massachusetts 100
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Thermo Trace Ltd. Australia 100
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Trace BioSciences Pty. Ltd. Australia 100
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Thermo Trace BioSciences NZ Limited New Zealand 99
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Trace America, Inc. Florida 100
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Herbos Dijaganosticka Croatia 50
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Shanghai Long March Chiron Trace Medical Science Co. Ltd. China 22
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Thermo Environmental Instruments Inc. California 100
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Thermo Gastech Ltd. Canada 100
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Thermo Andersen Inc. Delaware 100
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7
THERMO ELECTRON CORPORATION
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Thermo Instruments do Brasil Ltda. Brazil 100
(1% of which shares are owned directly
by Thermo Elemental Inc.)
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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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Spectra-Physics Franklin Inc. Delaware 100
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Spectra-Physics Syracuse Inc. New York 100
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Thermo Hilger Crystals Limited England 100
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Spectra-Physics Stratford Inc. Delaware 100
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Thermo Power Corporation Massachusetts 100
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ACI Holdings Inc. New York 100
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T-Lyte Corporation Delaware 98
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TTT Metals of Minnesota, Inc. Minnesota 100
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TTT Metals of California, Inc. California 100
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TTT Metals of Wisconsin Inc. Wisconsin 100
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TMA/Hanford, Inc. Washington 100
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RGPC Inc. Michigan 100
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Lancaster Laboratories LLC Delaware 100
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Thermo EuroTech (Delaware) Inc. Delaware 100
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Thermo EuroTech Ireland Ltd. Ireland 100
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ThermoRetec Corporation Delaware 100
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GeoWest Golden Inc. Colorado 100
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GeoWest TriTechnics of Ohio, LLC Colorado 100
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RETEC Thermal, Inc. Delaware 100
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TRI Oak Ridge LLC Delaware 50
(additionally, 50% of the shares are owned
directly by Coleman Services Incorporated)
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TRUtech L.L.C. Delaware 47.5*
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Thermo Securities Corporation Delaware 100
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Thermo Eberline LLC Delaware 51
(49% owned by Thermo BioAnalysis Corporation)
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Thermo Technology Ventures Inc. Idaho 100
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Plasma Quench Investment Limited Partnership Delaware 60*
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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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Trex Medical Systems Corporation Delaware 100
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Thermo Corporation Delaware 100
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* Joint Venture/Partnership
8