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The History of Sequoia – Part VIII

May 24, 2022

…Wherein we’ll learn about the LISST-Portable, and the first Particles in Europe (PiE) conference. (Part VII can be found here: https://www.sequoiasci.com/article/the-history-of-sequoia-part-vii/) Way back in the early 2000’s Chuck had an idea for...

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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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Drill-mud Particle Size Analysis

May 16, 2016

Truly Portable Instrument Reduces Drilling Costs UPDATED 15 AUGUST 2017 The size distribution of drilling muds is frequently adjusted during the drilling process. As such, the particle size distribution must be measured frequently, several times a day....

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Turbidity vs Laser Diffraction – why LD is better

April 29, 2016

Last updated: 11 May 2016  Turbidity as a surrogate for suspended sediment concentration (SSC) is commonly used and deeply established in practice. The shortcomings of turbidity as a surrogate for SSC are: The calibration changes with grain size; The...

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