TSI Incorporated

TSI Incorporated, headquartered in Shoreview, Minnesota, manufactures precision measurement instruments for aerosol science, air flow, occupational safety, and indoor air quality applications, operating as a prime contractor on 3,075 federal awards (100% of recent portfolio) across contracts, indefinite-delivery vehicles, and blanket purchase agreements, with no material subcontract footprint. The company is a for-profit Subchapter S corporation owned by parent company JJF Group Inc., a self-certified small disadvantaged business, positioning TSI to compete on both full-and-open and set-aside vehicles; recent awards show no consistent set-aside pattern, with TSI competing across unrestricted procurements and selective small-business-set-aside orders.

TSI's federal capability portfolio centers on respiratory protection equipment (PortaCount respirator fit testers in multiple models), particle measurement and sizing systems (aerodynamic particle sizers, scanning mobility particle sizers, condensation particle counters, optical particle sizers), aerosol generators and neutralizers, air quality and environmental monitoring devices (DustTrak monitors, particle counters, diluters), occupational safety equipment (noise dosimeters, sound level meters, heat stress monitors), and calibration and maintenance services for its own equipment. Representative recent prime awards include a $6.064 million single-award IDIQ with the Mine Safety and Health Administration for noise dosimeters and microphones (June 2026), a $2 million single-award IDIQ with the Department of Veterans Affairs for respiratory fit testing equipment and annual calibrations under a total small business set-aside (September 2026), a $1.906 million delivery order from MSHA for noise dosimeters and microphones (June 2026), a $465 thousand purchase order from USDA Animal and Plant Health Inspection Service for PortaCount units and software licenses (September 2025), and a $3.19 million single-award indefinite-delivery contract with the Defense Logistics Agency Aviation for heat stress monitors (December 2023, with four delivery orders totaling $1.17 million to date).

Customer concentration is distributed across 283 federal agencies with significant depth across defense and civilian health sectors. The top five funding agencies account for 23% of awards by count but 46% of combined potential value, led by the Department of the Army Materiel Command Research Development and Engineering Command (60 awards, $54.3 million combined potential value), the Department of the Army (211 awards, $50 million), the Department of Health and Human Services Centers for Disease Control and Prevention Pittsburgh (236 awards, $9.4 million), the Department of the Army Medical Command (56 awards, $7 million), and the Department of the Army Materiel Command Aviation and Missile Command (55 awards, $5.7 million). The divergence between award count and dollar concentration signals that CDC places many small orders while Army programs anchor most dollar volume. TSI has served federal agencies continuously since 1978, with 3,081 total awards and $276.5 million in combined potential value; recent activity shows decline—71 awards in 2022 declining to 31 in 2026—though $223 million (81% of potential value) has been obligated, signaling strong invoicing against the pipeline.

TSI holds position on the General Services Administration Multiple Award Schedule with 942 task orders ($29.3 million combined potential value), reflecting broad civilian agency access and TSI's role as a commercial-off-the-shelf supplier across government. The company also anchors several single-award indefinite-delivery contracts: the DLA Aviation heat stress monitor vehicle ($3.19 million, December 2023–December 2028), the Mine Safety and Health Administration noise dosimeter IDIQ ($6.064 million, June 2026–June 2029), the VA respiratory fit testing IDIQ ($2 million, September 2026–September 2031, total small business set-aside), and an OSHA blanket purchase agreement for replacement and repair parts ($178.5 thousand, September 2025–September 2026). Historical IDIQs include USDA Animal and Plant Health Inspection Service blanket purchase agreements for PortaCount calibration and cleaning (two BPAs: $115.8 thousand through February 2026 and a three-year $150 thousand BPA for the same services), and a VA VHA VISN 15 blanket purchase agreement for quantitative respirator fit testers ($294.3 thousand, September 2022–September 2027). The parent vehicle footprint reveals TSI's strength in both specialized-equipment delivery orders and recurring maintenance and calibration services across federal operations.

Subcontract exposure is minimal: the source identifies three sub-awards, including aerosol particle sizer purchases through Battelle National Biodefense Institute (DHS/Battelle contract, January 2026) and Battelle Memorial Institute (NTP support, March 2024), and a condensation particle counter maintenance kit sub-award, indicating TSI primarily serves as a prime supplier rather than a sub-tier performer in federal programs. Federal grant sub-recipient work includes two entries: engineering supplies for University of Dayton (June 2024) and participation in a Air Force 711 Human Performance Wing project led by the Henry M. Jackson Foundation (November 2023) to mature TSI's Wearable Respiratory Protection Assessment System (WRPAS) technology for detecting and assessing fine and ultra-fine particulate matter in occupational and operational environments.

Recompete exposure in the next twenty-four months is modest: 20 awards with ultimate completion dates through October 2028 carry combined potential value of $1.3 million, concentrated in small purchase orders and routine maintenance contracts rather than major vehicles. The sustained customer concentration in Army medical and engineering commands, CDC, and VA health networks reflects TSI's embedded role in federal occupational health, environmental monitoring, and respiratory protection compliance programs.