ISO DIS 8130-1

Description / Abstract: This part of ISO 8130 specifies a method for the determination of the particle size of coating powders by sieve analysis. Particle size distributions with a maximum of less than 100 μm should be determined by laser diffraction (see ISO 8130-13). This method is used especially for determining the oversize material or for the presence of contamination and may be used as a quality control procedure (“go”/“no go” test) by checking the amount of powder 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: 1 μm to 63 μm

— electrostatic coating: 10 μm to 200 μm

— fluidizing-bed method: 100 μm and above

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