Malvern Instruments

Biopharmaceutical and Drug Development

Dyanamic Light Scattering - Common Terms Defined

Malvern Instruments

There are a number of sources of information that give a mathematical description of the terms used in light scattering. However, these will not usually give assistance in understanding their practical application.

The following list gives a definition, with notes on their specific use in the context of dynamic light scattering.

Z-Average size

The Z-average size (or Z-average mean) is used in dynamic light scattering as a parameter also known as the cumulants mean. It is a primary and most stable parameter produced by the tecnique.

To fidn out more about the Z-average size and other key terms including cumulants analysis, polydispersity index, diffusion coefficient, and hydrodynamic diameter, download this free whitepaper.

Available Downloads