Comparison for particle number concentration up to 500'000 cm-3

Project Description

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.

Progress Report 2020-02-26

The comparison took place at METAS from 3 to 6 February 2020. The participants are expected to submit the results electronically by 15 May 2020.

Metrology in Chemistry (MC)
Coordinating Institute
METAS (Switzerland)
Further Partners
AIST (Japan)