International comparison CCQM-K150: Particle number concentration (100 to 20 000 cm-3) and particle charge concentration (0.15 to 3 fC cm-3)
Year: 2023
Type: report
Abstract: This report presents the results of CCQM-K150, a key comparison between nine National Measurement Institutes (NMIs) which tested the capability of the NMIs to measure particle number concentration (in the range of 100 to 20 000 cm-3) using condensation particle counters (CPCs), and particle charge concentration (in the range of 0.15 to 3 fC cm-3) using aerosol electrometers (AEs). Measurements of aerosol particle number concentration are needed to demonstrate compliance to vehicle emission legislation and are becoming increasingly important in other areas such as ambient air and workplace monitoring. The measurements are typically carried out using condensation particle counters, which are calibrated using either reference CPCs or reference AEs. An analogous report is available for the CCQM-P189 comparison. CCQM-P189 was identical to and used the same experimental data as CCQM-K150 with one exception: data from TROPOS, which is not an NMI or Designated Institute (DI), were only included in CCQM-P189. CCQM-K150 was an amount-of-substance Track C comparison.
DOI: 10.47120/npl.env46
Institutions: National Physical Laboratory, Physikalisch-Technische Bundesanstalt, Swiss Federal Institute of Metrology, Laboratoire National de Métrologie et d'Essais, All-Russian Scientific Research Institute of Physical-Technical and Radiotechnical Measurements, National Institute of Metrology, Korea Research Institute of Standards and Science, Federal Institute For Materials Research and Testing
Language: English
Subfield: Instrumentation
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: gold
Funder: Government of the United Kingdom
OpenAlex ID: W4366169709