Process Control Equipment
- AMETEK Drexelbrook
- Atlas Copco Compressors
- Blue-White Industries
- CAS DataLoggers
- CHEMetrics
- ChemScan, Inc., an In-Situ Company
- EDI - Environmental Dynamics International
- Endress+Hauser
- FCI - Fluid Components International
- FCI - Fluid Components International
- Hach
- Hawk Measurement Systems
- HF scientific
- Howden
- Hydromantis Environmental Software Solutions, Inc.
- Lone Star Blower
- Lutz-JESCO America Corp.
- PMC Engineering
- Siemens Process Instrumentation
- Sierra Instruments, Inc.
- Tesco Controls, Inc.
- YSI, a Xylem brand