Published 23 Apr 2019
What is the standard for dynamic light scattering? How can we ensure compliance with recommended light scattering quality standards? Is there an international standard for light scattering? Recently an interesting question arrived at our help desk about the validity of…READ MORE >
Tags: 13321, 22412, DLS, International Standards, ISO
Published 31 Mar 2015
Can one calculate a PDI value excluding a small aggregation peak? For example if the main particle species is ~100nm and there is a small contribution (2% by intensity) from a peak at 5 microns. In that case, is it…READ MORE >
Tags: cumulant, dispersity, DLS, dynamic light scattering, ISO13321
Published 10 Jul 2014
Is the distribution peak size or the overall mean size better? In dynamic light scattering (DLS) we measure the intensity autocorrelation function of the scattered light. We then fit this function to obtain a size. There are two main fitting…READ MORE >
Tags: cumulant, data intepretation, DLS, dynamic light scattering, ISO13321