Instrumentation, Water & Wastewater
| Alamo Water Refiners, Inc. |
| Applied Membranes, Inc. |
| Badger Meter, Inc. |
| Barnant Co. |
| Bio-Chem Assoc., Inc. |
| Capital Controls Co., Inc. |
| Cartwright Consulting Co. |
| Chlorinators Inc. |
| Craig Ocean Sys., Inc. |
| Deltatrak, Inc. |
| Flowdata, Inc. |
| GLI Int'l. |
| Gems Sensors |
| H F Scientific, Inc. |
| Hach Co. |
| Hanna Instruments, Inc. |
| Horner Discus Int'l. Inc. |
| Hydro-Check Sys., Inc. |
| IBR, Inc. |
| ITT Barton |
| International Light, Inc. |
| ISTEC Corp. |
| Kentucky Water Treat. |
| Keytech Water Mgmt. |
| Milltronics, Inc. |
| Myron L Co. |
| Odessa Engineering |
| Orbeco Analytical Sys., Inc. |
| OREC / An Osmonics Co. |
| Osmonics |
| Palintest |
| Plast-O-Matic Valves Inc. |
| ReWater Sys., Inc. |
| RODI Sys. Corp. |
| Rosemont Analytical, Uniloc Div. |
| Ryan Herco Prod. Corp. |
| SeaMetrics |
| Sprite Ind., Inc. |
| SunRay Tech., Inc. |
| Taylor Tech., Inc. |
| Telatemp Corp. |
| Thornton Assoc., Inc. |
| Tintometer Ltd. (The) |
| Tintometer Ltd. |
| Vista Water Sys., Inc. |
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