About

Scope

Standardization pertaining to equipment and methods used in characterization or size classification of particulate material, where particles may be considered to include grains, flakes, fibres, droplets, bubbles or pores from the nanometre to the millimetre scale.

Covering the following:

  • Particle and particle ensemble characterization, mainly by determination of physical properties of the particles including, for example, size distribution, particle shape and morphology, weight, density, surface area or porosity, and mobility;
  • Particle systems characterization comprises particle-fluid and particle-particle interactions in suspensions, emulsions, aerosols or powders by determining their properties including concentration, electric charge, zeta potential, state of agglomeration, stability and rheology.

Each of the above areas will comprise standardization in the field of laboratory or process environment including terminology, reference materials, guidance for sampling, sample preparation, interpretation of results and uncertainty determination.

Quick links

52

published ISO standards *

under the direct responsibility of ISO/TC 24/SC 4

16

ISO standards under development *

under the direct responsibility of ISO/TC 24/SC 4

18

Participating members

15

Observing members

* number includes updates

Reference Title Type
ISO/TC 24/SC 4/WG 1 Representation of analysis data Working group
ISO/TC 24/SC 4/WG 2 Sedimentation, classification Working group
ISO/TC 24/SC 4/WG 3 Pore size distribution, porosity Working group
ISO/TC 24/SC 4/WG 5 Liquid displacement methods Working group
ISO/TC 24/SC 4/WG 6 Laser diffraction methods Working group
ISO/TC 24/SC 4/WG 7 Dynamic light scattering Working group
ISO/TC 24/SC 4/WG 8 Image analysis methods Working group
ISO/TC 24/SC 4/WG 9 Single particle light interaction methods Working group
ISO/TC 24/SC 4/WG 10 Small angle X-ray scattering method Working group
ISO/TC 24/SC 4/WG 11 Sample preparation and reference materials Working group
ISO/TC 24/SC 4/WG 12 Electrical mobility and number concentration analysis for aerosol particles Working group
ISO/TC 24/SC 4/WG 14 Acoustic methods Working group
ISO/TC 24/SC 4/WG 16 Characterisation of particle dispersion in liquids Working group
ISO/TC 24/SC 4/WG 17 Methods for zeta potential determination Working group

Liaison Committees to ISO/TC 24/SC 4

The committees below can access the documents of ISO/TC 24/SC 4:

Reference Title ISO/IEC
ISO/TC 47 Chemistry ISO
ISO/TC 119 Powder metallurgy ISO
ISO/TC 142 Cleaning equipment for air and other gases ISO
ISO/TC 146/SC 6 Indoor air ISO
ISO/TC 206 Fine ceramics ISO
ISO/TC 209 Cleanrooms and associated controlled environments ISO
ISO/TC 229 Nanotechnologies ISO
ISO/TC 256 Pigments, dyestuffs and extenders ISO
ISO/TC 261 Additive manufacturing ISO
ISO/TC 281 Fine bubble technology ISO

 

Liaison Committees from ISO/TC 24/SC 4

ISO/TC 24/SC 4 can access the documents of the committees below:

Reference Title ISO/IEC
ISO/TC 206 Fine ceramics ISO
ISO/TC 209 Cleanrooms and associated controlled environments ISO
ISO/TC 229 Nanotechnologies ISO
ISO/TC 261 Additive manufacturing ISO
ISO/TC 281 Fine bubble technology ISO
ISO/TC 334 Reference materials ISO

 

Organizations in liaison (Category A and B)

Acronym Title Category
EC - European Commission European Commission A
RILEM International Union of Laboratories and Experts in Construction Materials, Systems and Structures A

Date Month Location TC/SC Note
31-2 March-April 2022 ISO/TC 24/SC 4 **

* Information definite but meeting not yet formally convened
** Provisional

ISO/TC 24/SC 4 - Secretariat

BSI [United Kingdom]

British Standards Institution
389 Chiswick High Road
London
W4 4AL
United Kingdom

Tel: +44 208 996 90 00
Fax: +44 208 996 74 00