Ludlum Measurements Inc.
Sweetwater, TX
- UEI
- MYA6K3V3JHX8
- CAGE
- 23609
- SAM.gov registration
- Active through
Company facts
- FY2025 rankings
- Self-certified in SAM.gov
- Entity structure
- Corporate Entity (Not Tax Exempt)
- Other NAICS codes in SAM.gov
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- 334111 Electronic Computer Manufacturing
- 334418 Printed Circuit Assembly (Electronic Assembly) Manufacturing
- 334419 Other Electronic Component Manufacturing
- 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
- 334517 Irradiation Apparatus Manufacturing
- 541330 Engineering Services
- Corporate family
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- Ludlum Measurements, Inc. MBEANNFKXEK5
- Ludlum Measurements Inc. · Sweetwater, TX MAWSGVJ216X9
- Ludlum Measurements Inc. · Sweetwater, TX MH5DZH2JKNA5
- Ludlum Measurements Inc. · Knoxville, TN SDFCGHMGNJD7
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- SAM.gov registration date
- Physical address
- 501 Oak St, Sweetwater, TX 79556, USA
- Website
- ludlums.com
- Founded
- 1962
- Employees
- 51-250
- Estimated annual revenue
- $10M-$50M
- Industry
-
- Industrials
- Capital Goods
- Industrial Conglomerates
- Industrials & Manufacturing
- SIC code
- 39 Miscellaneous Manufacturing Industries
- Profiles
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 | -$6,355 |
| FY2025 | $97,334 |
| FY2024 | $473,408 |
| FY2023 | $1,313,029 |
Contract awards
Latest 5 listed here. See the rest on GovTribe.
Contract subawards
| Prime contractor | Prime award | Amount | Awarded |
|---|---|---|---|
| Triad National Security, LLC | 89233218CNA000001 | $1,746,060 | |
| Fluor Marine Propulsion, LLC | 89233018CNR000004 | $57,400 | |
| Fluor Marine Propulsion, LLC | 89233018CNR000004 | $51,135 | |
| Triad National Security, LLC | 89233218CNA000001 | $106,555 | |
| Fluor Marine Propulsion, LLC | 89233018CNR000004 | $96,696 |
Latest 5 listed here. See the rest on GovTribe.
Grant awards
| Award | Agency | Obligated | Awarded |
|---|---|---|---|
| Waveshifters and scintillators for ionizing radiation detection | Department of Energy | $417,137 |
Similar vendors
| Vendor | Location | Primary NAICS |
|---|---|---|
| Atlantic Nuclear Corp | Rockland, MA | 541330 Engineering Services |
| Rscs | Seabrook, NH | 562910 Remediation Services |
| Teletrix Corporation | Pittsburgh, PA | 334519 Other Measuring and Controlling Device Manufacturing |
| RDC | Georgetown, TX | 334519 Other Measuring and Controlling Device Manufacturing |
| Polimaster Inc. | Sterling, VA | 334519 Other Measuring and Controlling Device Manufacturing |
About the company
Ludlum Measurements Inc., a Sweetwater, Texas-based manufacturer of radiation detection and environmental monitoring equipment, operates as a prime contractor (98% of recent awards) and subcontractor on federal contracts for the design, manufacture, calibration, and repair of specialized radiation detection instruments. The company is a for-profit Subchapter S corporation with no reported SBA set-aside designations, though it qualifies for and has received Total Small Business set-aside awards. NAICS 334519 (Other Measuring and Controlling Device Manufacturing) and PSC 6665-P (Hazard-Detecting Instruments and Apparatus) dominate its federal footprint. Ludlum has been registered in SAM.gov since 2001 and competes full-and-open across a broad customer base.
Ludlum's federal work centers on radiation detection instruments, portal monitoring systems, survey meters, and calibration services. Representative prime awards include a $743 thousand definitive contract with Naval Sea Systems Command (August 2022) for design and manufacture of Near Background Survey Meters (NBSMs) with delivery through November 2025; a $486.7 thousand definitive contract with the United States Mint (September 2023) for a portal radiation detection system with performance through September 2028; a $114.9 thousand order from EPA's Office of Air and Radiation (March 2024) to replicate DOE radiation detection instrumentation for Federal Radiological Monitoring and Assessment Center (FRMAC) interoperability; and recurring annual calibration-and-repair service orders from EPA ($74.7 thousand, October 2023) for handheld radiation field instruments maintained for emergency-response deployment. Ludlum also manufactures handheld ion chambers, ozone monitors, and gate monitors for defense and civilian agencies.
Customer concentration spans 100 distinct federal agencies, with the top five accounting for 14% of award volume. Naval Sea Systems Command dominates potential value at $4.9 million across 13 awards, anchored by the NBSM production contract. EPA's Office for Air and Radiation follows with $441 thousand across 9 awards. By award count, EPA leads overall with 19 recent awards valued at $166 thousand combined, followed by Department of the Army and Defense Logistics Agency Disposition Services at 18 awards each. The Environmental Protection Agency, Navy, and Army Medical Command represent the core recurring customer set; the vendor also serves the Nuclear Regulatory Commission, FBI Headquarters, CDC, Department of Veterans Affairs regional networks, and the United States Mint.
Ludlum places task orders under EPA Blanket Purchase Agreements (EPBPA10W1339, 4W2039NASX, EP07W000042) and holds indefinite delivery contracts (IDC 1054095405B, IDC 1054095406A), though none of these vehicles anchors a large share of its footprint. Parent vehicles carry modest order volumes—three task orders under EPBPA10W1339 valued at $35 thousand combined and two orders under 4W2039NASX representing the largest concentrations.
Activity has contracted significantly in recent years—13 awards in 2023 declining to 4 awards in the first quarter of 2026. The combined potential value across all 613 awards in the source spans $11.4 million, with actual obligations reaching $13.5 million (119% of potential value), indicating completed work and task order executions exceeding initial ceiling estimates. This download represents a compressed footprint relative to the vendor's longevity (first award in source data dating to 1982); the recent trajectory suggests recompete pressure or shifting customer procurement patterns.
Ludlum subcontracts as a specialized equipment supplier to defense infrastructure and energy-security primes. Named subcontract work includes neutron detection equipment calibration and radiation detection monitors under Fluor Marine Propulsion LLC (March 2026 and August 2025) for Naval Nuclear Laboratory and Naval Nuclear Propulsion Program support; detection devices under Honeywell Federal Manufacturing & Technologies LLC (July 2025) for National Security Campus operations; photomultiplier tubes and component sets under the Waste Isolation Pilot Plant (WIPP) contract (multiple awards 2024–2025) for transuranic waste program support; and radiation detection monitors under International Towers LLC (August 2023) for a demolition and warehouse facility rehabilitation project. Sub work positions Ludlum as a component and calibration vendor within larger Department of Energy, Department of Defense, and environmental remediation primes rather than as a lead systems integrator.
Quick answers
Is Ludlum Measurements Inc. registered in SAM.gov?
Yes. Ludlum Measurements Inc.'s SAM.gov registration is active through January 9, 2027.
How much has Ludlum Measurements Inc. received in federal contracts?
Federal contracts obligated $97,334 to Ludlum Measurements Inc. in fiscal year 2025 and $1,877,415 in fiscal years 2023 through 2027.
How does Ludlum Measurements Inc. rank among federal contractors?
Ludlum Measurements Inc. ranked #24 in PSC 5860 and #66 in PSC J052 in FY2025.
What is Ludlum Measurements Inc.'s most recent federal award?
Ludlum Measurements Inc.'s most recent federal contract award is Calibration and repair of ludlum manufactured instruments (N0017326P5005), from Office of Naval Research (SECNAV), on January 12, 2026.
On GovTribe
See Ludlum Measurements Inc.'s full federal record
- Federal contract awards
- IDV awards
- Federal grant awards
- Subcontracting relationships
- Funding analysis by agency, NAICS and set-aside
- Similar vendors