Traceable size determination of nanoparticles, a comparison among European metrology institutes

Felix Meli, Tobias Klein, Egbert Buhr, Carl Georg Frase, Gudrun Gleber, Michael Krumrey, Alexandru Duta, Steluta Duta, Virpi Korpelainen, Roberto Bellotti, Gian Bartolo Picotto, Robert D. Boyd, Alexandre Cuenat

    Research output: Contribution to journalArticleScientificpeer-review

    86 Citations (Scopus)


    Within the European iMERA-Plus project 'Traceable Characterisation of Nanoparticles' various particle measurement procedures were developed and finally a measurement comparison for particle size was carried out among seven laboratories across six national metrology institutes. Seven high quality particle samples made from three different materials and having nominal sizes in the range from 10 to 200 nm were used. The participants applied five fundamentally different measurement methods, atomic force microscopy, dynamic light scattering (DLS), small-angle x-ray scattering, scanning electron microscopy and scanning electron microscopy in transmission mode, and provided a total of 48 independent, traceable results. The comparison reference values were determined as weighted means based on the estimated measurement uncertainties of the participants. The comparison reference values have combined standard uncertainties smaller than 1.4 nm for particles with sizes up to 100 nm. All methods, except DLS, provided consistent results.
    Original languageEnglish
    Number of pages15
    JournalMeasurement Science and Technology
    Issue number12
    Publication statusPublished - 2012
    MoE publication typeA1 Journal article-refereed


    • nanoparticles
    • gold colloids
    • traceable measurement
    • calibration
    • comparison


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