Electrical sensing zone

In electrical sensing zone an electrolyte solution is used to disperse particles. A tube with a narrow aperture is submerged in the solution and two electrodes are placed on both sides of the aperture. Electrolyte and particles travel through the aperture and the resistance proportional to the particle volume is measured. Each individual particle is counted and categorized in the appropriate size class.

The technique is used for characterizing and counting narrow distributions within the range of 0.6 to 1200 µm. Particles in low concentration solutions, powders and biological material can be analyzed. The measurements are performed on a Coulter Multisizer II.

The report consists of a graph showing the cumulative and differential volume or number distributions and statistics as the mode, mean and median diameter, skew ness and kurtosis, standard deviation etc.