Partical Counter

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A Particle Counter is a laboratory device used to detect and count particles. It counts the particles using either light scattering or light obscuration technique. The device contains a detection chamber. When the particle passes through this detection chamber, a high energy light source illuminates the particles that are counted and tabulated into standardized counting bins.

In light scattering technique, a photo detector is used to detect the redirected light through which the particles pass, whereas in the light obscuring method, the loss of light is detected. In both the techniques, the amplitude of the light scattered or light blocked is determined and the particle is counted and tabulated. In principal, a particle counter detects and counts particles one at a time.