Posts tagged zeta potential

Just Press a Button

In my last post I tried to give a sense of just how easy and convenient Beckman Coulter’s DelsaMax dynamic light scattering instruments are to use. Today I would like to add to that by describing – in very simple terms – what the user actually does to obtain particle size and zeta potential information from these analysers. Continue reading Just Press a Button

Nanoparticle Analysis Made Simple

In recent months the Dynamic Light Scattering website has gone into considerable detail on the principles by which this method gives us information on particle size. I would now like to simplify things and talk about what the Beckman Coulter DelsaMax family of dynamic light scattering instruments actually does to make life easier for those involved in particle characterisation. Continue reading Nanoparticle Analysis Made Simple

Dynamic Light Scattering Recap

Over the last couple of years we have looked deeply and widely into the subject of dynamic light scattering. I think it’s worth stopping, from time to time, to look again at the basic principles and restate them – perhaps in different words – to make sure they are understood. Continue reading Dynamic Light Scattering Recap


Flow cytometry - Beckman Coulter

Having written a lot about Beckman Coulter’s contribution to the field of dynamic light scattering, a recent news item has reminded me that there is a lot more to the company than the manufacture of particle characterisation instruments. The report concerned the acquisition of a specialist developer and maker of cytometers. Continue reading Cytometry

Characterisation of Nanotubes


I hadn’t heard of it until recently, but a relatively new class of materials known as carbon nanotubes is proving to be very useful in a variety of applications and appears to offer scope for solutions in many branches of science and engineering. To make best use of that potential, these materials need to be characterised and assessed. In one of a range of application notes downloadable from the Beckman Coulter website, the use of DelsaMax PRO in such analysis is studied. Continue reading Characterisation of Nanotubes

DelsaMax ASSIST and Analysis Software

DelsaMax ASSIST - Beckman Coulter


In some of my recent posts I have given brief details of the DelsaMax PRO and CORE dynamic light scattering instruments from Beckman Coulter. Among other things, I have been amazed by how quickly, accurately and reliably this series delivers its particle size and zeta potential analysis. I have also been impressed by the fact that it can do this with incredibly small samples and tiny particles. Today I’d like to talk about the other two items in the DelsaMax product line-up: DelsaMax ASSIST and the DelsaMax Analysis Software. Continue reading DelsaMax ASSIST and Analysis Software

DelsaMax PRO and CORE Analysers

DelsaMax CORE – Beckman Coulter

DelsaMax CORE

Depending on your specific particle characterisation needs, the main choice you will need to make within the new DelsaMax range of dynamic light scattering instruments from Beckman Coulter might well be between the PRO and CORE versions. A little summary here might help. Continue reading DelsaMax PRO and CORE Analysers

DelsaMax Website

The recent announcement of a whole new range of Beckman Coulter dynamic light scattering instruments was of major significance for those of us with a deep interest in nanoparticle research. After all, the existing Beckman Coulter range already had so much to offer. What would the new DelsaMax analysers have to add? Continue reading DelsaMax Website

Beckman Coulter

Dr Arnold O Beckman

Dr Arnold O Beckman

I’m always interested to know something about the background of companies who make the instruments I use. In the case of Beckman Coulter, which makes dynamic light scattering equipment, there is a lot of information to research. Particle characterisation is just one of many areas in which this organisation supplies products and services. Even within that category, the photon correlation spectroscopy (for measuring sizes and size distributions) and electrophoretic light scattering (for measuring zeta potential) instruments are not the only ones on offer. Continue reading Beckman Coulter

Particle and Material Characterisation

Meritics logo

If you are a regular reader of the dynamic light scattering website, or of those on Coulter Counters ( and pore size (, you will probably be aware of Meritics ( Meritics provides authoritative advice and support on these and all other aspects of particle and material characterisation technology. Continue reading Particle and Material Characterisation