What are the different types of particle size analyzers?
Different types of particle analyzers are electrozone sensors, laser diffraction and microscopes. The type of analyzer used generally depends on the specific data and particle size to be assessed. Manufacturers, people in research and development, product testers and quality control staff use different types of particle analyzers to determine the size and distribution. In the solution is an anode and a cathode containing a sensor. The particles are attracted by an electric charge sensor. Each particle shifts a certain amount of liquid as it passes the sensor and causes disturbance in the electric field. The disruption range corresponds to the size of the particle and by measuring the number and size of changes in impedance, it is possible to monitor the distribution of particles.
This type of particle analysis was designed for testing blood samples and not necessarily suitable for industrial applications. This technique is expensive and can be time consuming to analyze larger particles. Is also ineffective for extremely small particlese. Organic materials may be a problem because they do not have to be attracted by an electric charge. Dense or porous substances can provide false values.
Size and distribution can also be obtained by laser diffraction, commonly called a low -angle scattering (LALLS). Instrumentation generally includes one or more laser light beams, rear and angle scattering detectors and focal plane detectors. When the particles pass through laser beams, the light is scattered and the sensors detect the deflection formula. The efficiency of this type of particle analyzer largely depends on the number of sensors. Large particles tend to distract brighter light angles and small particles spread dimmer light at greater angles.
industries often prefer Lalls over other types of analyzers to characterize particle and quality control. This method can be used for dry powders, emulsione or liquid suspension. Laser particle analyzers usually provide results quickly and require little or no calibration.
microscopy is the most cost -effective of all particle analyzers and allows direct visualization of the particles concerned. Small random sampling used in this method is generally not sufficient to create accurate accounts or particle distribution. Before it is possible to obtain valid results from this testing, the National Standard Office suggests that at least 10,000 different randomized tests are performed.