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Laser Diffraction Principles

April 2, 2017

This is a simple description. For detailed explanations see articles: Laser Diffraction-101 and -201. Particle Size Distribution  (PSD) is a multi-parameter description of how the total concentration of particles is distributed into many size fractions....

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Flocculation or Drift?

August 3, 2016

While testing a LISST-ABS in the laboratory with field samples, Dr. Benjamin van der Waal of Rhodes University in South Africa noticed an apparent instrument drift. He was using samples extracted from a river for this testing, so that the samples were...

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LISST-200X: Smarter not just smaller

May 19, 2016

Upon first impressions the LISST-200X appears to be just a smaller version of the LISST-100X. However much of what makes the LISST-200X such an improvement over the LISST-100X is what lies deep inside the instrument.  Let’s explore these features in...

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Laser Diffraction 201 – LISST

April 15, 2011

How LISST works! [Sequoia, April 15, 2011] 1. The Ring Detector 2. How Particle Sizes and Measurement Angles are Selected 3. Origin of the Matrix Formulation – It’s just algebra 4. Inversion of Data – the Information Content...

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