Disinfectants
| Applied Membranes, Inc. |
| Aqua Care Sys., Inc. |
| Aqua Man Inc. |
| Argo Scientific |
| Bio-Chem Assoc., Inc. |
| Capital Controls Co., Inc. |
| Cartwright Consulting Co. |
| Ecolab Inc., Food & Beverage Div. |
| Engineering Specialties |
| Environmental Safety Prod. (E.S.P.) |
| F.M. Mark Electronics, Inc. |
| Fibercor |
| Horner Discus Int'l. Inc. |
| WEDECO Ideal Horizons |
| Lanosheen, Inc. |
| Nu-Calgon |
| O-SO Pure |
| OREC, An Osmonics Co. |
| Ozonia North America |
| Ozotech, Inc. |
| Professional Water Tech., Inc. |
| Pure 1 Sys. |
| SemperPure Sys., Inc. |
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