Tag Archives: ISO13321


Published 23 Apr 2019

Light scattering ISO standard anyone [ISO13321, ISO22412]?

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 >

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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?

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 >

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