Dispersion Letters - Aims and Scope

Validation of the quality of a method/device or laboratory’s analytical competency (ISO 17025) requires the estimation of measurement uncertainty. Guides such as the GUM and Nordtest Guide 537 provide methods for determining measurement uncertainty, which requires identifying and quantifying all sources of error. Any existing errors, including bias, are evaluated for significance and incorporated into the determination of the combined measurement uncertainty. The LUMiSizer® and LUMiReader® devices have been developed and optimized to minimize errors, and their methods for measuring the particle size distribution can be validated by measuring certified reference materials under repeatability and reproducibility conditions, as outlined in Nordtest Guide 537. In this article, we discuss the mathematics behind determining the measurement uncertainty for the sedimentation velocity and Stokes diameter, as determined by LUM GmbH devices. We also calculate the expanded combined measurement uncertainties for each device with regards to a silica particle standard. Our findings demonstrate the reliability and accuracy of LUMiSizer® and LUMiReader® devices in particle size distribution determination, which makes them an excellent tool for research in nanotechnology, material science, and biotechnology.

Here we upload all the lecture abstracts for the Int'l Conference for Dispersion Analysis & Materials Testing 2022 that will be held on January 24–25, 2022.