NASA/NSSC has a requirement for Aerotrak Portable Particle Counters Purchase. NASA/NSSC intends to issue a sole source contract to TSI Incorporated 500 Cardigan Rd Shoreview Minnesota 55126 – 3903 United States under the authority of FAR 12.102(a). It has been determined that TSI Incorporated is the sole provider of Aerotrak Portable Particle Counters Purchase NASA/NSSC will be the procuring center for this effort. Performance will be located at NASA/ Kennedy Space Center (KSC). The Government intends to acquire Commercial items or services using the provisions, clauses and procedures prescribed in FAR Part 12 for Commercial. The NAICS Code for this procurement is 334516. Interested organizations may submit their capabilities and qualifications to perform the effort in writing to the identified point of contact not later than 3:00 p.m. Central Standard Time on 5/29/2026. Such capabilities/qualifications will be evaluated solely for the purpose of determining whether or not to conduct this procurement on a competitive basis. A determination by the Government not to compete this proposed effort on a full and open competition basis, based upon responses to this notice, is solely within the discretion of the government. Oral communications are not acceptable in response to this notice. NASA FAR Supplement Clause 1852.215-84, Ombudsman, is applicable. The Center Ombudsman for this acquisition can be found at https://www.hq.nasa.gov/office/procurement/regs/Procurement-Ombuds-Comp-Advocate-Listing.pdf . Primary Point of Contact: Kacey Hickman Procurement Kacey.l.hickman@nasa.gov