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How LISST-VSF Works

January 4, 2017

The LISST-VSF is the first autonomous VSF instrument for use in the sea. It measures the Volume Scattering Function, the beam attenuation and scattering coefficients (c and b), and depolarization via the elements P12 and P22 of the scattering Mueller...

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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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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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How LISST-Infinite Works

April 14, 2016

  LISST-Infinite installed next to a draft tube. Sequoia’s LISST-Infinite instrument is made to protect turbines by sounding alarms so that plant operators may decide to shut down power production and save turbines from abrasive damage. The...

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