News
August 27, 2026
Real-Time Measurement of Settling Velocity
In contrast with almost all other Sequoia instruments, the LISST-RTSSV is not a standalone instrument. It was designed and optimized for one application only: monitoring the effect of deep-sea mining’s...
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August 27, 2026
Measuring the Angular Distribution of Light Scattering
The LISST-VSF measures how particles scatter light at different angles, from almost 0° to 150°. This is known as the Volume Scattering Function (VSF). The VSF is fundamental to understanding ocean...
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August 19, 2026
High-Resolution Imaging of Particles and Plankton
The LISST-Holo2 uses digital holography to capture holograms of particles and plankton in water without disturbing the sample. Processing of the hologram (known as reconstruction) in the LISST-Holo2 software...
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August 19, 2026
Measuring Particle Size Distribution in Natural Waters
The LISST-200X measures the size distribution and concentration of suspended particles directly in water. Using laser diffraction, it measures how particles scatter light and inverts that scattering...
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June 10, 2026
Sequoia Application Note SEQ-001-V1
Beam attenuation (c, [m-1]) is a critical inherent optical property (IOP) for oceanographers studying underwater visibility and suspended particles in the water column. Measuring beam attenuation in-situ requires transmissometers...
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