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EXHIBIT 21
COMPANY NAME JURISDICTION
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1. "A" Company Orthodontics Delaware
2. Alexon-Tend, Inc. Wisconsin
3. Allesee Orthodontic Appliances, Inc. Wisconsin
4. Applied Biotech, Inc. California
5. Barnstead Thermolyne Corporation Delaware
6. belle de st. claire, inc. Wisconsin
7. CASCO-NERL Diagnostics Corporation Wisconsin
8. Chase Scientific Glass, Inc. Wisconsin
9. Diagnostics Reagents, Inc. California
10. Electrothermal Engineering Ltd. England
11. Erie Electroverre SA Switzerland
12 Erie Scientific Company Delaware
13. Erie Scientific Company of Puerto Rico Delaware
14. Erie Scientific Hungary Kft. Hungary
15. Erie-Watala Glass Company Limited Hong Kong
16. Ever Ready Thermometer Co., Inc. Wisconsin
17. Gerhard Menzel Glasbearbeitungswerk
GmbH & Co. KG Germany
18. Kerr Australia Pty. Ltd. Australia
19. Kerr Corporation Delaware
20. Kerr GmbH Germany
21. Kerr Italia S.p.A. Italy
22. Kerr UK Limited England
23. Lab-Line Instruments, Inc. Delaware
24. Maquiladora Aci-Mex, SA de CV Mexico
25. Metrex Research Corporation Wisconsin
26. Nalge (Europe) Limited England
27. Nalge Nunc International Corporation Delaware
28. Nalge Nunc International K.K. Japan
29. Nalge Process Technologies Group, Inc. Wisconsin
30. National Scientific Company Wisconsin
31. The Naugatuck Glass Company Connecticut
32. Nunc A/S Denmark
33. Nunc GmbH & Co. KG Germany
34. Ormco Corporation Delaware
35. Ormco Europe BV The Netherlands
36. Ormco BV The Netherlands
37. Ormco de Mexico SA de CV Mexico
38. Ormco Pty. Ltd. Australia
39. Ormodent SA France
40. Ormex SA de CV Mexico
41. Owl Separation Systems, Inc. Wisconsin
42. Pinnacle Products, Inc. Wisconsin
43. Remel Inc. Wisconsin
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COMPANY NAME JURISDICTION
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44. Richard-Allan Scientific Company Wisconsin
45. Samco Scientific Corporation Delaware
46. Scherf Prazision Europa GmbH Germany
47. SDS de Mexico SA de CV Mexico
48. Summit Biotechnology, Inc. Wisconsin
49. Sybron Canada Limited Canada
50. Sybron Dental Specialties, Inc. Delaware
51. Sybron Dental Specialties Japan, Inc. Japan
52. Sybron Laboratory Products Corporation Delaware