Using the Coulter Principle, also known as Electrical Sensing Zone (ESZ), the Multisizer 4e COULTER COUNTER® provides size distributions in number, volume and surface area in one measurement, with an overall sizing range of 0.2 µm to 1600 µm. Its response is unaffected by particle color, shape, composition or refractive index. The Coulter Principle is the leading technology in high resolution and accuracy and it is enhanced even further in the Multisizer 4e by using a Digital Pulse Processor (DPP).

DPP provides ultra-high resolution, multiple channel analysis and accuracy that is unattainable by other technologies. It all makes the Multisizer 4e indispensable for Quality Control or any research project involving sizing and/or counting. The computer-controlled instrument features software that fully supports 21 CFR Part 11.