ISO 21501-1:2025
International Standard
Current Edition
·
Approved on
10 December 2025
Determination of particle size distribution — Single particle light interaction methods — Part 1: Light scattering aerosol spectrometer
ISO 21501-1:2025 Files
English
37 Pages
Current Edition
BHD
83.83
ISO 21501-1:2025 Scope
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.
Best Sellers
GSO 150-2:2013
Gulf Standard
Expiration dates for food products - Part 2 :
Voluntary expiration dates
BH GSO 150-2:2015
GSO 150-2:2013
Bahraini Standard
Expiration dates for food products - Part 2 :
Voluntary expiration dates
GSO 9:2022
Gulf Technical Regulation
Labeling of prepackaged food stuffs
BH GSO 9:2023
GSO 9:2022
Bahraini Technical Regulation
Labeling of prepackaged food stuffs
Recently Published
ISO 11553-2:2026
International Standard
Safety of machinery — Laser processing machines — Part 2: Safety requirements for hand-held or hand-operated laser processing machines
ISO 7554-1:2026
International Standard
Surgical instruments — Terms, measuring methods and test methods — Part 1: Vocabulary
ISO 12749-5:2026
International Standard
Nuclear energy, nuclear technologies, and radiological protection — Vocabulary — Part 5: Nuclear reactors
ISO 18968:2026
International Standard
Translation-oriented writing — Text production and text evaluation