To determine if a material is classed as a “nanomaterial” according to the EC recommendation on a definition (see above, EC 2011), physico-chemical characterisation of the material is required in order to obtain the number size-distribution information. This information can be obtained using laser light diffraction/ dynamic light scattering techniques to determine the percentage of particles within the sample that are below 100 nm. If 50% or more of the particles in the number size distribution have one or more external dimensions in the size range 1 – 100 nm, then the material is classed as a nanomaterial in accordance with the EC definition.
SAFENANO offers a range of particle characterisation services, including granulometry, in the context of the EU definition of nanomaterials. For further information, please visit our service page or contact us.