# Annual service for six (6) TSI 3321A Aerodynamic Particle Sizers (APS) and twelve (12) TSI Aerodynamic Particle Diluter Model 3302a

Canonical: https://abierto.us/opportunities/75f40125q126188

- Solicitation number: 75F40125Q126188
- Notice type: Combined synopsis and solicitation
- Status: Awarded to Tsi Incorporated
- Department: Department of Health and Human Services
- Agency: Food and Drug Administration
- Contracting office: Food and Drug Administration (75F402)
- NAICS: 811210 Electronic and Precision Equipment Repair and Maintenance
- Product or service code: J066 Maintenance, Repair and Rebuilding of Equipment: Instruments and Laboratory Equipment
- County: Ramsey County (FIPS 27123). https://abierto.us/counties/ramsey-county-mn-27123
- City: St. Paul. https://abierto.us/cities/st-paul-mn-2758000
- First posted: August 7, 2025
- Last posted: August 26, 2025
- SAM.gov: https://sam.gov/workspace/contract/opp/e7893859d96e4cc7a4517aa0bab9801a/view

## Description

**8/26/2025:** See attached Amendment 1. The U.S. Food and Drug Administration (FDA), National Center for Toxicological Research (NCTR), Division of Biochemical Toxicology requires annual service for six TSI 3321A Aerodynamic Particle Sizers (APS) and twelve TSI Aerodynamic Particle Diluter Model 3302a. Knowing particle size is critical in meeting the standards for aerosol inhalation studies.

The APS is the only instrument capable of real-time aerodynamic particle size determination in a footprint that will fit into our class III glove boxes used for toxic inhalation studies. The Aerodynamic Particle Diluters are required for bringing the particle count of our primary aerosols down to a level where they can be analyzed by the APS.

## Award on USAspending

- Recipient: Tsi Incorporated (UEI HLY6Q9S8CEV8)
- Contract: 75F40125P00241, purchase order
- Obligated: $63,270.00
- Competition: Competed Under SAP, 1 offers received
- Link: solicitation number 75F40125Q126188 equals the FPDS solicitation identifier; same sub-agency 7524 (high confidence)
- Record: https://www.usaspending.gov/award/CONT_AWD_75F40125P00241_7524_-NONE-_-NONE-/


## Publications

- August 7, 2025: Combined synopsis and solicitation, due August 22, 2025 at 2:00 PM EDT. Notice 74bab98d72e34c2f85f556434049d359. https://sam.gov/workspace/contract/opp/74bab98d72e34c2f85f556434049d359/view
- August 26, 2025: Combined synopsis and solicitation, due August 28, 2025 at 2:00 PM EDT. Notice e7893859d96e4cc7a4517aa0bab9801a. https://sam.gov/workspace/contract/opp/e7893859d96e4cc7a4517aa0bab9801a/view

## Points of contact

- David Kramer, david.kramer@fda.hhs.gov
- Nick Sartain, nick.sartain@fda.hhs.gov

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Source: SAM.gov Contract Opportunities bulk extract and USAspending.gov award data. Confirm deadlines on SAM.gov before responding. Cite https://abierto.us/opportunities/75f40125q126188.