Multisizer 3 Coulter Counter


Multisizer 3 Coulter CounterYou will find a brief account of the Multisizer 4 Coulter Counter from Beckman Coulter elsewhere on this site. A similarly versatile and accurate instrument for particle sizing and counting is the Multisizer 3. Meritics will be happy to show you the differences and relate them to your particular needs.

Coulter Counters, as you will know, provide very precise information on particle numbers, volumes, masses and surface area sizes, and their distributions, all in one quick measurement.

Their operation is based on the Coulter Principle which, by the way, is also sometimes described as the Electrical Sensing Zone (ESZ) method. This allows analysis of particles in a size range from 0.4 µm to 1600 µm. Crucially, its results are not affected by colour, shape, composition or refractive index.

Adding to the many existing advantages of the Coulter Principle, Beckman Coulter has equipped the Multisizer 3 and 4 with a Digital Pulse Processor. The result is ultra-high resolution, with the facility for multiple channel analysis, and an unmatched level of accuracy.

The DPP allows detection and measurement, in real time, of any change in a sample during the course of analysis. By looking at the pulse distribution, information can be gained on, for example, cell volume changes, agglomeration and dissolution.

The Multisizer 3 is suitable for both aqueous and organic electrolytes. It features an environmentally friendly, mercury-free metering system and a grease-free aperture system that simplifies reconfiguration for any chosen range of sizes. Within the selected range, there is a choice of between 4 and 300 resolution channels.

For the operator, the instrument’s ease of use – as well as its accuracy – is very important. User-friendly software allows complete control via computer. For any analysis that requires information on particle sizes, counts or both, the Multisizer 3 is ideal, with many successful applications to date in, for example, industrial developments, life science research and quality control.