Tag Archives: ISO13321


Published 31 Mar 2015

PDI from an individual peak in DLS

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, is it possible to recalculate…READ MORE >

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Published 10 Jul 2014

FAQ: Peak size or z-average size – which one to pick in DLS?

In dynamic light scattering (DLS) the intensity autocorrelation function of the scattered light is measured. This function is then fit to obtain a size. There are two main fitting algorithms which may confuse users: Cumulant (or z-average) size and polydispersity…READ MORE >

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