Rees Scientific Corporation

Rees Scientific Corporation, doing business as Rees Scientific Corp, manufactures and services proprietary environmental monitoring systems—temperature, humidity, pressure, and alarm sensors—for federal laboratory, medical, and research facilities, operating as a pure prime contractor across a 1,618-award federal footprint with no socioeconomic set-asides and minimal subcontractor reliance.

Rees Scientific is a for-profit manufacturer headquartered in Trenton, New Jersey, with federal contractor registration since 2002. The company competes exclusively in full-and-open procurements without 8(a), HUBZone, SDVOSB, or other set-aside designations. Its business centers on the sale and maintenance of proprietary Centron and Presidio environmental monitoring systems—original equipment manufactured by Rees Scientific and sold with associated calibration, validation, and maintenance services. Nearly all federal awards are sole-source procurements justified by Rees Scientific's status as exclusive manufacturer and software owner; the company's systems are warranted only when serviced by Rees technicians, effectively locking in the vendor for life-cycle maintenance across installed federal infrastructure.

Customer concentration reflects a heavy defense-health footprint. The top five agencies account for 46% of awards: the Defense Health Agency (142 awards, $31.2 million combined potential value), the Department of the Navy Bureau of Medicine and Surgery (284 awards, $19.3 million), the Department of the Army Medical Command (162 awards, $7.4 million), the NIH Clinical Center (67 awards, $4.5 million), and the National Institute of Allergy and Infectious Diseases (87 awards, $4 million). By dollar value, the Defense Health Agency dominates despite lower award count; the Navy places many smaller maintenance task orders. Recent representative prime awards include a $3.497 million five-year full-service maintenance plan for Rees monitoring systems at Alvin C. York and Tennessee Valley Healthcare Systems VA Medical Centers under the GSA Multiple Award Schedule (awarded December 1, 2024), a $878 million installation and validation of an automated centralized environmental monitoring system for Navy Medicine Readiness and Training Command at Marine Corps Base Camp Pendleton and branch clinics (awarded September 27, 2023), a $829 million environmental monitoring maintenance contract at Camp Zama and Yokosuka, Japan (awarded August 20, 2024), and a $604 million maintenance and repair services order from the National Institute on Drug Abuse for Rees Centron monitoring systems (awarded September 19, 2024).

Rees Scientific holds one active parent vehicle: a $10 million Blanket Purchase Agreement with the Department of Health and Human Services (awarded August 31, 2024, running through August 31, 2027) covering laboratory supplies, medical and scientific equipment, repair and maintenance services, and installation, testing, validation, calibration, and training. The company also operates under 192 task orders on the GSA Multiple Award Schedule ($20.2 million combined potential value), which is its primary delivery mechanism for federal task orders. Additional smaller BPAs with specific NIH institutes—such as BPA HHSN263201600132B (37 task orders, $552 thousand) and BPA 75N98024A00178 with the National Institute of Arthritis and Musculoskeletal and Skin Diseases (7 task orders, $232 thousand)—provide standing authority for individual component agencies to place orders.

Activity has declined modestly in recent years. The vendor received 59 awards in 2022, 62 in 2023, 45 in 2024, 44 in 2025, and 33 to date in 2026 (representing a 3-week-old dataset as of October 15, 2026). Combined potential value across all 1,619 awards is $141.9 million; obligated dollars total $74.9 million (53% of potential value), reflecting a mix of mature delivery orders and option periods not yet exercised. Within the next twenty-four months, 52 awards with combined potential value of $10.6 million reach ultimate completion date and face recompete.

Award distribution by category reflects the vendor's core equipment and service profile. Top NAICS codes are Other Electronic and Precision Equipment Repair and Maintenance (460 awards), Instrument Manufacturing for Measuring and Testing Electricity and Electrical Signals (240 awards), and Other Measuring and Controlling Device Manufacturing (185 awards). Top PSCs are Maint/Repair/Rebuild of Equipment—Instruments and Laboratory Equipment (324 awards), Laboratory Equipment and Supplies (231 awards), and Maint/Repair/Rebuild of Equipment—Medical, Dental, and Veterinary Equipment and Supplies (226 awards).

Service Contract Inventory data capture only 8 records (5 prime, 3 sub) across FY2022–FY2025, with zero SCI-reportable invoiced revenue recorded for FY2024 and FY2025. The small SCI footprint reflects the vendor's focus on goods procurement (Centron hardware, sensors, transmitters, batteries) and purchase orders below the $150,000 SCI reporting threshold, rather than service contracts. Minimal FTE data (0.2 FTEs recorded in FY2022 and FY2024, 0 in FY2025) confirms that the vast majority of Rees Scientific's federal revenue derives from equipment sales and task-order-based maintenance, not tracked labor billing. The vendor does maintain GSA Schedule labor rates spanning Field Technician ($163.87/hr, technical school or certification), Regional Service Manager ($191.18/hr, bachelor's, 5 years experience), and Field Engineer ($191.18/hr, bachelor's, 3 years experience)—all without security clearance requirements.

Rees Scientific operates as a pure prime on 100% of awards (1,618 of 1,619 total), with only a single sub-award recorded (May 6, 2025, environmental monitoring sales and service under an IGF contract). The vendor builds and deploys its own field service teams; it does not engage subcontractors on federal work. Performance locations span CONUS and OCONUS, with significant work at military medical treatment facilities in Japan (Yokosuka, Camp Zama), South Korea, Bahrain, and Peru, as well as domestic Naval hospitals, Army medical clinics, Air Force bases, and VA medical centers. The company's competitive posture is defensible through proprietary software exclusivity and OEM status; barrier to entry is high for competitors seeking to displace Rees at installed sites.

Computerized environmental and card access systems