scope:

This International Standard provides requirements for selecting methods, measuring release and presenting data relevant to process applications of the material. The purpose of this International Standard is to determine nano-objects released from powders by measuring aerosols liberated after a defined aerosolization procedure. Nano-object characterization includes particle concentration and size distribution of the fraction aerosolized. Tribological methods are excluded where direct mechanical friction is applied to grind or abrade the material. This International stand does not include the characterization of particle sizes within the powder.