BS EN ISO 8130-1:2019

The British Standards InstitutionThis document specifies a method for the determination of the equivalent-sphere particle size distribution of coating powders by laser diffraction, for particles of the size range from 1 μm to 300 μm.

This document specifies a method for the determination of the particle size distribution of coating powders by sieve analysis. Particle size distributions with a maximum of less than 100µm is determined by laser diffraction, ISO8130‑13. This method is used especially for determining the oversize material or for the presence of contamination and can be used as a quality control procedure (“go”/“no go” test) by checking the amount retained on a single sieve.

The following particle sizes are typical for coating powders, however the particle size can deviate depending on the application:

• thin-film technology: 1µm to 63µm;

• electrostatic coating: 10µm to 200µm;

• fluidizing-bed method: 100µm and above.

NOTE Sieves with a mesh size smaller than 32µm are not practical and are likely to become blind during use.