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Rich Details of a River Column Revealed by LISST-SL

UPDATED 18 SEPT 2017   The LISST-SL2 instrument delivers the most powerful suite of sediment data. It is an isokinetic instrument (isokinetic means intake velocity matches river velocity). The parameters it measures are: depth, optical transmission across 3mm path, river velocity, water temperature,...

LISST-ABS River Profiles by USGS

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 turbidity degrades with increasing grain size. This...

Measuring Particle Size Distribution of Cement

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. The LISST-Portable|XR is truly portable –...

In-Line Holography Introduction

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 viewing particles in a larger volume with each...

Interpreting Particle Data

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 before 117 contain other numerical data, e.g....