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LISST-ABS River Profiles by USGS

September 7, 2017

UPDATED 09 SEPTEMBER 2017 As described in related articles, the LISST-ABS has a near-constant sensitivity (Volts/concentration) for sediment particles in the >30 micron size range [see Features section here]. In contrast, the sensitivity of optical...

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Measuring Particle Size Distribution of Cement

August 11, 2017

Laser Diffraction Analysis of NIST 114q Cement per AASHTO Standard T353-14   Laser diffraction analysis of cements is a common industry practice to control quality of cements. Typically, companies must invest in multiple instruments at as many stations....

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In-Line Holography Introduction

July 7, 2017

Holography permits a photograph-like view of particles in water. Photography suffers from a small depth of focus, so that only a small volume of water can be studied with each photo. In contrast, holography has total depth-of-field and therefore, permits...

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Interpreting Particle Data

May 30, 2017

This page is written to explain how to interpret your data files. File formats and contents of processed datafiles are described here (note, the page numbers may differ by Manual versions): For LISST-100X User’s Manual, see Appendix A, page 117 [pages...

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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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