Standard Number | DS/ISO 19749:2021 |
---|---|
Organization | Danish Standards |
Level | National |
Category | Test Method | Characterization | Measurement |
Status |
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This document specifies methods of determining nanoparticle size and shape distributions by acquiring and evaluating scanning electron microscope images and by obtaining and reporting accurate results. NOTE 1 This document applies to particles with a lower size limit that depends on the required uncertainty and on the suitable performance of the SEM, which is to be proven first -according to the requirements described in this document. NOTE 2 This document also applies to SEM-based size and shape measurements of larger than nanoscale particles.