Both Laser Diffraction (LD) and Differential Centrifugal Sedimentation (DCS) are used for quantitative particle size distribution analysis of samples in the sub micron region. LD can be described as a low resolution, wide dynamic range technique which is robust, fast and easy to operate. DCS, is a high resolution particle sizing technique, and is now similarly robust, fast and simple to use. Historically however, DCS has been limited in dynamic range; but with the introduction of speed ramping, the dynamic range capabilities of DCS are now much improved.

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