| 1 | NovaLynx Corporation | | USA |
| 2 | Advanced Sensor Technologies Inc. | | USA |
| 3 | Omega Engineering Inc. | | USA |
| 4 | ProMinent Fluid Controls Inc. | | USA |
| 5 | J & W Instruments Inc. | | USA |
| 6 | Analytical Measurements | | USA |
| 7 | Amber Science Inc. | | USA |
| 8 | Sunburst Sensors LLC | | USA |
| 9 | Us Koei Technologies Inc. | | USA |
| 10 | Electro-Chemical Devices Inc. | | USA |
| 11 | Davis Instruments | | USA |
| 12 | Liquid Analysis Systems Inc. | | USA |
| 13 | Rhino Process Controls & Instrumentation | | USA |
| 14 | Insite Instrumentation Group Inc. | | USA |
| 15 | International Chemtex Corp. | | USA |
| 16 | Pacific Sentry LLC | | USA |
| 17 | Barben Analyzer Technology | | USA |
| 18 | Hydrolab | | USA |
| 19 | Xylem Inc. | | USA |
| 20 | Endress+Hauser | | USA |
| 21 | PCE Americas Inc. | | USA |
| 22 | Swan Analytical USA Inc. | | USA |
| 23 | Morphix Technologies | | USA |
| 24 | Hamilton Company | | USA |
| 25 | Polestar Technologies Inc. | | USA |
| 26 | pHionics Inc. | | USA |
| 27 | Sensor Development Inc. | | USA |
| 28 | Denver Instrument Co. | | USA |
| 29 | Campbell Scientific Inc. | | USA |
| 30 | Mettler-Toledo | | USA |
| 31 | Stevens Water Monitoring Systems Inc. | | USA |
| 32 | Yokogawa Analytical | | USA |
| 33 | World Precision Instruments Inc. | | USA |
| 34 | Phidgets Inc | | USA |
| 35 | Analytical Sensors Inc. | | USA |
| 36 | Inframark Water and Infrastructure Services | | USA |
| 37 | Texas Instruments | | USA |
| 38 | PICS INC | | USA |
| 39 | ABB | | USA |
| 40 | Georg Fischer LLC | | USA |
| 41 | Lakewood Instruments LLC | | USA |
| 42 | Burkert Fluid Control Systems | | USA |
| 43 | Fluorometrics Instruments LLC | | USA |
