| PSPreiser Scientific INC | Saint Albans | WV | — | ● ACTIVE |
Prescott Machine, LLC | Saginaw | MI | — | ● ACTIVE |
Princeton Research Instruments INC | Princeton | NJ | — | ● ACTIVE |
Process Sensing Technologies CORP. | Hauppauge | NY | 20–99 | ● ACTIVE |
Protein Technologies INC | Tucson | AZ | — | ● ACTIVE |
Proto Manufacturing, INC. | Taylor | MI | — | ● ACTIVE |
Psi Water Technologies, INC. | Milpitas | CA | 20–99 | ● ACTIVE |
Pure Flow INC | Graham | NC | 100–499 | ● ACTIVE |
| PLPyromation LLC | Fort Wayne | IN | 100–499 | ● ACTIVE |
Qed INC | Santa Ana | CA | — | ● ACTIVE |
Qei, LLC | Springfield | NJ | 20–99 | ● ACTIVE |
Qiagen, LLC | Germantown | MD | — | ● ACTIVE |
Qiagen Sciences LLC | Germantown | MD | — | ● ACTIVE |
Quintron Instrument Company, INC. | New Berlin | WI | — | ● ACTIVE |
Rapid Micro Biosystems, INC. | Lowell | MA | — | ● ACTIVE |
Red Lion Controls, INC. | York | PA | 20–99 | ● ACTIVE |
| RIRenishaw, INC. | West Dundee | IL | — | ● ACTIVE |
Reotemp Instrument Corporation | San Diego | CA | 100–499 | ● ACTIVE |
| RWResource West, INC. | Grand Junction | CO | — | ● ACTIVE |
| RLReuter-stokes, LLC | Twinsburg | OH | 100–499 | ● ACTIVE |
Reynard Corporation | San Clemente | CA | — | ● ACTIVE |
Rki Instruments, INC. | Union City | CA | — | ● ACTIVE |
Roscid Technologies INC | Woburn | MA | — | ● ACTIVE |
Rosemount INC. | Shakopee | MN | — | ● ACTIVE |
Rudolph Research Analytical Corporation | Hackettstown | NJ | — | ● ACTIVE |
Ruelco INC | New Orleans | LA | 20–99 | ● ACTIVE |
Russells Technical Products INC | Holland | MI | 20–99 | ● ACTIVE |
R. W. Martin and Sons INC | Kent | OH | 20–99 | ● ACTIVE |
Salvo Technologies, INC. | Largo | FL | — | ● ACTIVE |
Santa Barbara Infrared, INC. | Santa Barbara | CA | — | ● ACTIVE |
Sapidyne Instruments INC. | Boise | ID | 1–19 | ● ACTIVE |
Schneider Optics, INC. | Hauppauge | NY | — | ● ACTIVE |
| SESchwien Engineering, INC. | Pomona | CA | — | ● ACTIVE |
| SSScully Signal Company | Wilmington | MA | — | ● ACTIVE |
Seagate Technology LLC | Fremont | CA | — | ● ACTIVE |
Seal Analytical INC. | Mequon | WI | 20–99 | ● ACTIVE |
Seek Thermal, INC. | Goleta | CA | — | ● ACTIVE |
Sellers Optical, INC. | Costa Mesa | CA | — | ● ACTIVE |
Sensia LLC | Coraopolis | PA | 20–99 | ● ACTIVE |
Sensonetics, INC. | Fountain Valley | CA | — | ● ACTIVE |
Sepragen CORP | Union City | CA | — | ● ACTIVE |
Shimadzu Scientific Instruments, INC. | Columbia | MD | — | ● ACTIVE |
| SUShimadzu USA Manufacturing | Canby | OR | 100–499 | ● ACTIVE |
Siemens Healthcare Diagnostics INC. | Tarrytown | NY | — | ● ACTIVE |
Sierra Instruments, INC. | Monterey | CA | — | ● ACTIVE |
Sigray, INC. | Benicia | CA | — | ● ACTIVE |
Smith Systems INC | Brevard | NC | 20–99 | ● ACTIVE |
Soilmoisture Equipment CORP. | Goleta | CA | — | ● ACTIVE |
| SMSolon Manufacturing CO | Chardon | OH | — | ● ACTIVE |
Space Electronics, LLC | Berlin | CT | — | ● ACTIVE |
Spectradyne LLC | Signal Hill | CA | — | ● ACTIVE |
Spectra Solutions INC | Norwood | MA | — | ● ACTIVE |
Spectro Scientific, INC | Chelmsford | MA | — | ● ACTIVE |
Spex Sample Prep LLC | Metuchen | NJ | — | ● ACTIVE |
Spi Borescopes LLC | Miami | FL | — | ● ACTIVE |
Standard Biotools INC | South San Francisco | CA | — | ● ACTIVE |
| SCStar Cryoelectronics, LLC | Santa Fe | NM | — | ● ACTIVE |
Stefan Sydor Optics INC | Rochester | NY | — | ● ACTIVE |
Stoneage, INC. | Durango | CO | 100–499 | ● ACTIVE |
Struers INC | Westlake | OH | — | ● ACTIVE |
Superior Tactical LLC | Grandview | TX | — | ● ACTIVE |
| SOSurface Optics Corporation | San Diego | CA | 20–99 | ● ACTIVE |
Suss Microtec INC | Corona | CA | — | ● ACTIVE |
Sutter Instrument CORP | Novato | CA | — | ● ACTIVE |
Symbrium INC | Raleigh | NC | — | ● ACTIVE |
Sysmex America, INC | Lincolnshire | IL | — | ● ACTIVE |
Tactical Evolution Group, LLC | Hubert | NC | — | ● ACTIVE |
Tavis CORP | Mariposa | CA | 20–99 | ● ACTIVE |
Tc Nu-star, INC. | Shakopee | MN | — | ● ACTIVE |
Tec5usa INC. | Plainview | NY | 20–99 | ● ACTIVE |
Ted Pella, INC. | Redding | CA | — | ● ACTIVE |
Teledyne Instruments, INC. | Chatsworth | CA | — | ● ACTIVE |
Teledyne Instruments, INC. | San Diego | CA | — | ● ACTIVE |
Tempco Electric Heater Corporation | Wood Dale | IL | — | ● ACTIVE |
| TSTemperature Specialists, INC. | Saint Francis | MN | — | ● ACTIVE |
Temposonics, LLC | Cary | NC | 100–499 | ● ACTIVE |
Testequity LLC | Moorpark | CA | — | ● ACTIVE |
Texmate, INC. | Carlsbad | CA | — | ● ACTIVE |
Thermetrics, LLC | Seattle | WA | — | ● ACTIVE |
Thermometrics Corporation | Northridge | CA | — | ● ACTIVE |
Thermoworks INC. | American Fork | UT | — | ● ACTIVE |
| TLThorlabs Lens Systems, INC. | Rochester | NY | 20–99 | ● ACTIVE |
Thwing-albert Instrument CO | West Berlin | NJ | 20–99 | ● ACTIVE |
Tmmi, LLC | Wheat Ridge | CO | 1–19 | ● ACTIVE |
Trilion Quality Systems LLC | King of Prussia | PA | — | ● ACTIVE |
| TSTru Simulation + Training INC. | Lutz | FL | — | ● ACTIVE |
Tsi Incorporated | Shoreview | MN | — | ● ACTIVE |
Tucker-davis Technologies, INC. | Alachua | FL | 20–99 | ● ACTIVE |
Turner Designs, INC. | San Jose | CA | — | ● ACTIVE |
Unilux INC | Saddle Brook | NJ | — | ● ACTIVE |
United Process Controls INC | Oak Creek | WI | 20–99 | ● ACTIVE |
| USUSA Scientific, INC. | Ocala | FL | — | ● ACTIVE |
U. S. Dynamics Corporation | Amityville | NY | — | ● ACTIVE |
Uster Technologies, INC | Knoxville | TN | — | ● ACTIVE |
Valco Instruments CO INC | Houston | TX | 100–499 | ● ACTIVE |
Validyne Engineering CORP | Canoga Park | CA | — | ● ACTIVE |
| VIVarioscale, INC | Vista | CA | — | ● ACTIVE |
| VMVenture Measurement Company LLC | Spartanburg | SC | 20–99 | ● ACTIVE |
Vernier Software & Technology INC. | Beaverton | OR | 100–499 | ● ACTIVE |
Vertex Optics, INC. | Victor | NY | — | ● ACTIVE |