TSI 8525 P-Trak Ultrafine Particle Counter


The P-Trak® Ultrafine Particle Counter Model 8525 measures workplace ultrafine particulate levels, as well as helping eliminate indoor air quality (IAQ) problems. This portable instrument detects and counts ultrafine particles (smaller than 1 micrometer) that often accompany or signal the presence of a pollutant that is the root cause of complaints.


Product Details

Ultrafine particles are defined as having a diameter less than 0.1 μm (or 100 nm). Engineered nanoparticles (nanomaterials) are a subset of ultrafine particles with dimensions from 1 to 100 nm. Nanomaterials are produced and used for industrial and high-tech applications, while ultrafine particles are the byproducts of combustion and other chemical reactions. Unfortunately, the occupational health risks associated with manufacturing and using nanomaterials are not clearly understood. As a result, a need has arisen to assess workplace conditions. Using TSI’s proven technology, the P-Trak gives direct, real-time measurement of workplace ultrafine particulate levels.

The P-Trak Ultrafine Particle Counter also locates obvious pollutant sources such as boilers, furnaces, and vehicles, and it also detects the not-so-obvious sources such as photocopy machines and printers. Use this instrument to detect the migration of toxic exhaust gases, malfunctioning office equipment, pinhole gasket leaks in boilers and a wide variety of other problems.


  • Real-time ultrafine particle counter
  • Solves tough IAQ problems
  • Easy to use
  • Data log information


  • Check office equipment
  • Cleanroom containment checks
  • Filter checks
  • Check fume hoods
  • Check safety cabinets
  • Vehicle emission migration
  • Combustion leaks
  • Control smoking areas



TSI 8016 Isopropyl Alcohol, 30ml x 16 Bottles

TSI 8023 Alcohol Wicks


TSI 1090014 TrakPro Data Analysis Software

TSI 800563 Computer Interface Cable


TSI 801623 Battery Holder


TSI 801625 Zero Filter

TSI 801624 Alcohol Cartridge

TSI 801616 Inlet Screen Assembly

TSI 801615 Sample Tube for P-Trak

TSI 801622 Telescoping Sample Probe

TSI 1083070 Alcohol Fill Capsule and Storage Cap for P-Trak

TSI 1083071 Storage Cap for P-Trak