BS PD CEN/TS 16976:2016

BS PD CEN/TS 16976:2016 describes a standard method for determining the particle number concentrationin ambient air in a range up to about 10⁷ cm^-3 for averaging times equal to or larger than 1 min. The standardmethod is based on a Condensation Particle Counter (CPC) operated in the counting mode and an appropriatedilution system for concentrations exceeding the counting mode range. It also defines the performancecharacteristics and the minimum requirements of the instruments to be used. The lower and upper sizesconsidered within this document are 7 nm and a few micrometres, respectively. This document describessampling, operation, data processing and QA/QC procedures including calibration parameters.Cross References:ISO 278912008/50/EC