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ISO 21501-1:2025

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Note: This standard has a new edition: ISO 21501-1:2025

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Abstract

This document specifies characteristics of a light scattering aerosol spectrometer (LSAS) which is used for measuring the size, number concentration and number-based size distribution of particles suspended in a gas. This document provide the calibration procedure and the validation method for aerosol spectrometers. This document applies to: —    characterization of metered dose inhalers (MDI), dry powder inhalers (DPI) and nebulizers in pharmacy; —    production control of active agents; —    cut-off determination: impactors, cyclones and impingers; —    atmospheric aerosols: bio-aerosols, stables or composting facilities, nebulized droplets, measurements in street tunnels; —    fractional separation efficiency determination of filters.

Document information

  • Standard from ISO
  • Published:
  • Expires:
  • Edition: 2
  • Version: 1
  • Document type: IS
  • ICS 19.120
  • ISO TC ISO/TC 24/SC 4

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