2. Getting involved
3. Standards Committees
4. KRdL

VDI/DIN-Commission on Air Pollution Prevention (KRdL) - Standards Committee

Procedure

VN

Overview

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 7 nm and a few micrometres, respectively. This document describes sampling, operation, data processing and QA/QC procedures including calibration parameters.

Document: references other documents

Responsible national committee

NA 134-04-02-18 UA - Measurement of particles in ambient air - Determination of the particle number concentration  

Responsible european committee

CEN/TC 264/WG 32 - Ambient air – Particle number concentration