Methods

In this project material specific protocols for sample preparation for the measurement of particle number concentration will be developed and their performance evaluated in terms of accuracy, precision and traceability.
A new interlaboratory comparison (@VAMAS) on number concentration measurement of complex, industry-relevant particles in the size range from 1 nm to 1000 nm using different particle counting methods (e.g. spICP-MS, PTA, microscopy) and ensemble methods (e.g. SAXS, MADLS, CLS, UV-Vis, Raman spectroscopy), including sample preparation and distribution, measurement protocols and uniform data analysis and representation.