| Sterlitech Corp (Kent, WA)
|
| Steven Sims Inc (Shelton, WA)
|
| Stewart Instrument Co (Gonzales, LA)
|
| Stillings Instrument Co (Royal Oak, MI)
|
| Stockwell Scientific Inc (Scottsdale, AZ)
|
| Stovall Life Science Inc (Greensboro, NC)
|
| Strategic Diagnostics Inc (Dallas, TX)
|
| Streck Laboratories (La Vista, NE)
|
| Stress Relief Engineering Co (Costa Mesa, CA)
|
| Stress Tek Inc (Kent, WA)
|
| Stults Scientific Engineering (Springfield, IL)
|
| Subminiture Instrument Corp (Ogden, UT)
|
| Sud-Chemie Performance Pack (Colton, CA)
|
| Sun Infrared Technologies Inc (O Fallon, IL)
|
| Sunn Technology Portable Air (Des Moines, IA)
|
| Superior Sensors (Plains, MT)
|
| Superior Systems Technology (Lees Summit, MO)
|
| Sure Temp (Port Clinton, OH)
|
| Survey Technologies Inc (Portland, OR)
|
| Sutron Corp (Sterling, VA)
|
| Svanaco Inc (Chicago, IL)
|
| Svs Engineering (Reading, MA)
|
| Swingguard Co (Killen, AL)
|
| Swoffer Instruments Inc (Seattle, WA)
|
| Sws Systems Inc (Roebuck, SC)
|
