NEN-EN 16976:2023 Ontw. en

Draft standard
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54 Pages
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Publication date 2023-05-08
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English
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Ambient air - Determination of the particle number concentration of atmospheric aerosol
This document describes a standard method for determining the particle number concentration in ambient air in a range up to about 107 cm-3 for averaging times equal to or larger than 1 min. The standard method is based on a Condensation Particle Counter (CPC) operated in the counting mode and an appropriate dilution system for concentrations exceeding the counting mode range. It also defines the performance characteristics and the minimum requirements of the instruments to be used. The lower and upper sizes considered within this document are 10 nm and a few micrometres, respectively. This document describes sampling, operation, data processing and QA/QC procedures including calibration parameters.
This document replaces:
Extra information
Registration date
2023-05-24
Committee
390050
TC
CEN/TC 264
ICS code
13.040.20 Ambient Atmospheres
Related to
prEN 16976:2023, IDT
Keywords
Air - Air quality - Air examination - Health services - Indoor air - Determination of content - Aerosols

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