Notice of Intent.pdf
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- Attached to
- Component Repair and Calibration
- Solicitation number
- 75301-26-Q-79276
About this file
This is a Notice of Intent issued by the Centers for Disease Control and Prevention for a sole source firm fixed price purchase order to TSI Incorporated (CAGE Code 24575) located at 500 Cardigan Road, Shoreview, MN 55126. The Government intends to procure repair and calibration services for three Aerodynamic Particle Sizers with serial numbers 1169, 1203, and 72321006, with an expected turnaround of 21 days. TSI Inc. is identified as the sole source provider because only the manufacturer possesses the proprietary knowledge and access required to adjust calibration models, understand internal flow regulators, and access instrument components located behind embedded electronics.
The scope of work requires TSI Inc. to calibrate the three instruments to a flow rate of 5 liters per minute (1 lpm sample + 4 lpm sheath) and maintain this calibration despite pressure drops up to 50 inH₂O through microprocessor-controlled volumetric flow control and barometric pressure correction. Additionally, TSI Inc. must calibrate the instruments for precise and accurate number-size distributions for particles ranging from 0.37 to 20 micrometers aerodynamic diameter using time-of-flight technique and a patented double-crest optical system to detect particle coincidence and identify poor signals. The Government will provide the components for repair and calibration. All responsible sources may submit quotations by Tuesday, September 15, 2026, at 10:00 a.m. Eastern Standard Time to Sandra Adams at ab41@cdc.gov. The determination to proceed with sole source award or conduct competitive procurement remains solely within the Government's discretion.
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| File | Type | Posted |
|---|---|---|
| A5-Statement of Work.pdf |
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Notice of Intent
The Centers for Disease Control and Prevention intends to award a sole source firm fixed price purchase order to TSI Incorporated 500 Cardigan Road Shoreview, MN 55126 (CAGE Code:
24575) for the purchase of repair and calibration services for Government owned equipment.
Only the manufacturer (TSI Inc.) can repair and calibrate the Aerodynamic Particle Sizer because proprietary models must be adjusted for the calibration, proprietary knowledge of internal flow regulators is needed for the repair, and unique access to instrument components that are located behind embedded electronics is required. Alternative service providers are not available because proprietary information on the instrument operating model and flow regulation system is required.
Description
TCI shall repair and calibrate 3 Aerodynamic Particle Sizers with an expected turnaround of 21 days. Upon receipt of instruments, TSI Inc. shall bring the 3 Aerodynamic Particle Sizers to a calibration flow rate of 5 liters per minute (lpm) (1 lpm for sample + 4 lpm for sheath) and maintain the calibration flow rate, even with a pressure drop of up to 50 inH20 at the inlet by adjusting microprocessor controlled volumetric flow control, barometric pressure correction, and separate pumps for sheath and total flows, to enable the Aerodynamic Particle Sizers to operate under a wide range of conditions and still maintain calibration.
TSI Inc. shall also calibrate the 3 Aerodynamic Particle sizers for precise and accurate number-size distributions for 0.37 to 20 micrometers aerodynamic diameter using a time-of-flight technique, and a patented, double-crest optical system to detect the occurrence of particle coincidence (when more than one particle is in the detection area) and to identify poor signals near the instrument’s lower detection threshold. The Government will provide the following components for repair and calibration:
Component Serial Number
Aerodynamic Particle Sizer 1169
Aerodynamic Particle Sizer 1203
Aerodynamic Particle Sizer 72321006
The Government intends to solicit and negotiate with only one source under the authority of
FAR 12.102 and 12.201. All responsible sources may submit a proposal or quotation, which shall be considered by the agency.
This notice of intent is not a request for competitive quotations; however, all quotations responses received by Tuesday, 15 September 2026 at 10:00 am Eastern Standard Time (EST) of the issuance of this notice will be considered by the government. A determination by the government not to compete this proposed contract based upon responses to this notice is solely within the discretion of the government. Information received will normally be considered solely for the purpose of determining whether to conduct competitive procurement. Any quotations
/responses should be emailed to Sandra Adams at ab41@cdc.gov by Tuesday, 15 September
2026.
File details come from the government source that posted it. Updated .