Tag Archives: standard


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 12 Jul 2018

Why do I need a standard if I have a GPC/SEC system with a light scattering detector?

To many people, obtaining molecular weight information from GPC/SEC analysis involves a lengthy calibration process.  A series of standards of known molecular weight are analyzed and a calibration curve based on the standards’ retention volume is generated.  This can be…READ MORE >

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Published 20 Jun 2017

Latex standard larger than on the bottle?

Three methods to verify dynamic light scattering systems with Latex Standards If you are a meticulous researcher you may want to test your new Zetasizer. Is it really providing the correct size? One of the advantages of dynamic light scattering…READ MORE >

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Published 26 Sep 2013

The Chromatogram Series: Polystyrene (PS)

Here is an example chromatogram of polystyrene in THF. The run conditions and some results are detailed in the table below. Wikipedia: Polystyrene is a synthetic aromatic polymer made from the monomer styrene, a liquid petrochemical. Polystyrene can be rigid…READ MORE >

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