Ludlum Measurements Inc.
Knoxville, TN Doing business as Protean Instrument
- UEI
- SDFCGHMGNJD7
- CAGE
- 6PUQ5
- SAM.gov registration
- Active through
Company facts
- Self-certified in SAM.gov
- Entity structure
- Corporate Entity (Not Tax Exempt)
- Other NAICS codes in SAM.gov
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- 334513 Instruments and Related Products Manufacturing for Measuring, Displaying, and Controlling Industrial Process Variables
- 334515 Instrument Manufacturing for Measuring and Testing Electricity and Electrical Signals
- 334516 Analytical Laboratory Instrument Manufacturing
- 541330 Engineering Services
- 541380 Testing Laboratories and Services
- 541690 Other Scientific and Technical Consulting Services
- 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)
- Corporate family
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Parent
Sweetwater, TX
MYA6K3V3JHX8
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Parent
Sweetwater, TX
MYA6K3V3JHX8
- SAM.gov registration date
- Physical address
- 10744 Dutchtown Rd, Knoxville, TN 37932, USA
- Website
- proteaninstrument.com
- Industry
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- Health Care
- Pharmaceuticals, Biotechnology & Life Sciences
- Life Sciences Tools & Services
- SIC code
- 38 Instruments & Related Products
Registration and certifications come from SAM.gov and the SBA; company details from public web sources. Updated .
Contract obligations by fiscal year
| Fiscal year | Obligated |
|---|---|
| FY2027 To date | $0 |
| FY2026 | $0 |
| FY2025 | $76,230 |
Contract awards
Latest 5 listed here. See the rest on GovTribe.
Contract subawards
| Prime contractor | Prime award | Amount | Awarded |
|---|---|---|---|
| Consolidated Nuclear Security, LLC | DENA0001942 | $31,670 |
Similar vendors
| Vendor | Location | Primary NAICS |
|---|---|---|
| Mirion Technologies (Canberra), Inc. | Atlanta, GA | 334519 Other Measuring and Controlling Device Manufacturing |
| Gold Standard Radiation Detection, Inc. | Albuquerque, NM | 334517 Irradiation Apparatus Manufacturing |
| Rso, Inc. | — | 541620 Environmental Consulting Services |
| Alpha Spectra, Inc. | Grand Junction, CO | 334519 Other Measuring and Controlling Device Manufacturing |
| Atlantic Nuclear Corp | Rockland, MA | 541330 Engineering Services |
About the company
Ludlum Measurements Inc., operating under the doing business as name Protean Instrument, is a for-profit corporate entity registered in SAM.gov since March 2012 that specializes in providing specialized radiological detection and measurement instrumentation to federal agencies. As a small business contractor, the company has established itself as a supplier of technical equipment and related services to the Department of Defense and its affiliated organizations, demonstrating expertise in radiological instrumentation solutions tailored to government research and operational requirements.
The company's federal contract portfolio reflects its focus on delivering specialized radiological detection systems and support services. Most recently, Ludlum Measurements Inc. was awarded a $76.2K firm fixed-price purchase order in September 2025 by the Uniformed Services University of the Health Sciences to supply a complete alpha/beta swipe counter system to the Armed Forces Radiobiology Research Institute, designated as a total small business set-aside. This contract, scheduled for completion in December 2025, encompasses not only the dual alpha and beta detection equipment but also installation, operator training, warranty support, calibration sources, and integrated analysis software for contamination survey operations. Prior to this, the company held a $26.1K annual contract with the Office of Naval Research awarded in April 2021, extending through March 2024, demonstrating sustained relationships with naval research entities. Additionally, Ludlum Measurements Inc. has served as a subcontractor on service contracts, including work as a subcontractor to Consolidated Nuclear Security LLC in February 2022. All identified prime contract awards have carried total small business set-aside designations, underscoring the company's status and competitive positioning within the small business federal contracting community.
Quick answers
Is Ludlum Measurements Inc. registered in SAM.gov?
Yes. Ludlum Measurements Inc.'s SAM.gov registration is active through January 5, 2027.
How much has Ludlum Measurements Inc. received in federal contracts?
Federal contracts obligated $76,230 to Ludlum Measurements Inc. in fiscal year 2025.
How does Ludlum Measurements Inc. rank among federal contractors?
Ludlum Measurements Inc. ranked #70 at the DOD Uniformed Services University of the Health Sciences in FY2025.
What is Ludlum Measurements Inc.'s most recent federal award?
Ludlum Measurements Inc.'s most recent federal contract award is Alpha beta swipe counter (HU000125PE015), from Uniformed Services University of the Health Sciences, on September 12, 2025.
On GovTribe
See Ludlum Measurements Inc.'s full federal record
- Federal contract awards
- Subcontracting relationships
- Funding analysis by agency, NAICS and set-aside
- Similar vendors