Metric: Aerosol particle number concentration (PNC)
Concentration range: 3 target concentrations in the range 20'000 cm-3 - 500'000 cm-3
Particle size range: 3 target particle sizes in the range 20 nm -200 nm (mobility diameter)
Test aerosol: Polydisperse soot aerosol from combustion generator
Measuring instrument: Condensation Particle Counter (CPC)
The aim of the comparison is to compare the accuracy of National Metrology Institutes‘ when measuring high particle number concentrations in the CPC plateau region.