Diffraction pattern of irregular particles in the laser beam

Quality

ISO Standards

International standardisation for the analysis of particle size and shape

Sympatec is an active member of the ISO/TC24/SC4 ‘Particle Characterization‘ committee and has been contributing to the development of national and international standards in this field for more than 30 years. SC4 focuses on the characterisation of particles, including size, shape, and other physical properties, and comprises both published and draft standards currently under development. Dr Köhler, Sympatec's R&D Director, currently serves as Chairman of the overarching ISO/TC24 'Particle Characterization Including Sieving' committee. Meanwhile, Dr Witt, Sympatec's former Technical Director and current Operating Partner, held the position of Chairman of ISO/TC24/SC4 from 2017 to 2023. Dr Köhler also took over the chairmanship of Working Group 8 for image analysis methods from Dr Witt in 2017.

Further information on the committees and their standardisation activities is available on the official ISO website:

Below, you can find a list of the ISO standards from the working groups in which Sympatec actively participates, all of which are relevant to our instruments for particle size and shape analysis.

From working group ISO/TC 24/SC 4/WG 1 | Representation of analysis data

Particle characterization of particulate systems — Vocabulary

Representation of results of particle size analysis — Part 1: Graphical representation

Representation of results of particle size analysis — Part 2: Calculation of average particle sizes/diameters and moments from particle size distributions

Representation of results of particle size analysis — Part 3: Adjustment of an experimental curve to a reference model

Representation of results of particle size analysis — Part 4: Characterization of a classification process

Representation of results of particle size analysis — Part 4: Characterization of a classification process — Amendment 1: Additional explanations and minor corrections

Representation of results of particle size analysis — Part 5: Methods of calculation relating to particle size analyses using logarithmic normal probability distribution

Representation of results of particle size analysis — Part 6: Descriptive and quantitative representation of particle shape and morphology

From working group ISO/TC 24/SC 4/WG 6 | Laser diffraction methods

Particle size analysis — Laser diffraction methods

Laser diffraction measurements — Good practice

From working group ISO/TC 24/SC 4/WG 7 | Dynamic light scattering

Particle size analysis — Dynamic light scattering (DLS)

From working group ISO/TC 24/SC 4/WG 8 | Image analysis methods

Particle size analysis — Image analysis methods — Part 1: Static image analysis methods

Particle size analysis — Image analysis methods — Part 2: Dynamic image analysis methods

[Under development] Particle characterization — Algorithms for reference image generation for image analysis

[Under development] Particle characterization — Colour image analysis methods

From working group ISO/TC 24/SC 4/WG 11 | Sample preparation and reference materials 

Reference materials for particle size measurement — Specification of requirements

Preparation of particulate reference materials — Part 1: Polydisperse material based on picket fence of monodisperse spherical particles

Preparation of particulate reference materials — Part 2: Polydisperse spherical particles

Particulate materials — Sampling and sample splitting for the determination of particulate properties

Particulate materials — Sampling and sample splitting for the determination of particulate properties — Amendment 1

Sample preparation — Dispersing procedures for powders in liquids

[Under development] Particulate materials — Sampling and sample splitting for the determination of particulate properties

From working group ISO/TC 24/SC 4/WG 14 | Ultrasonic Extinction [disbanded]

Measurement and characterization of particles by acoustic methods — Part 1: Concepts and procedures in ultrasonic attenuation spectroscopy

Measurement and characterization of particles by acoustic methods — Part 2: Linear theory