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Sequoia Scientific

LISST-Holo

LISST-Holo
The LISST-Holo from Sequoia is the world’s first commercially available submersible Digital Holographic Particle Imaging System. The system was developed by Dr. Alex Nimmo Smith at the Marine Institute of the University of Plymouth (UK) and Sequoia holds a world-wide license for manufacture.
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LISST-200X

LISST-200X
The LISST-200X marks a major advance in the technology of submersible particle size and concentrations measurements. Smaller, lighter, smarter, for starters, this model combines the size ranges of the original LISST-100XB and -100XC. It stores all instrument files on-board; no more searching. It guides the user on the quality of a newly acquired background file and whether to accept or reject. It has a greater depth rating, making it suitable for integrating into coastal profiling packages such as CTD’s. It incorporates better daylight rejection, a faster temperature sensor, and a more rugged optics design that gives it a greater tolerance to abuse.
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LISST-Portable XR

LISST-Portable XR
The LISST-Portable|XR is the world’s first and only battery powered portable particle size analyzer. It can be used in the field, in the laboratory or on the factory floor.
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LISST-DEEP

LISST-DEEP
The LISST-Deep instrument obtains in-situ measurements of particle size distribution, optical transmission, and the optical volume scattering function(VSF) at depths down to 3,000 meters.
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LISST-STX

LISST-STX
The LISST-STX is a submersible field instrument developed for in-situ observation of the size-dependent settling velocity distribution of suspended particles. It incorporates a mechanized Settling Column.
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LISST-VSF

LISST-VSF
he LISST-VSF from Sequoia is the world’s first commercially available submersible instrument for measuring the volume scattering function (VSF) of water in situ with some polarization discrimination capability. The LISST-VSF covers the angular range from 0.094 to 150 degrees.
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LISST-STOKES

LISST-STOKES
The LISST-STOKES from Sequoia is the world’s first commercially available submersible instrument for measuring the depolarization ratio in situ.
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LISST-Hydro

LISST-Hydro
Particle size analyzer for Hydro Power applications The LISST-Hydro instrument system is designed to supplement Sequoia’s LISST-Infinite instrument in hydro power monitoring applications or work as a standalone instrument for hydro power plants where the sediment concentrations do not exceed 700-8,000 mg/l.
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LISST-Infinite

LISST-Infinite
The LISST-Infinite instrument is designed for use in hydro-power plants to monitor sediment concentration and size distribution for turbine protection. The instrument is installed near intakes, or near draft tubes.
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LISST-ABS Acoustic Backscatter Sensor

LISST-ABS Acoustic Backscatter Sensor
Sequoia Scientific, Inc. is proud to offer the first low-cost acoustic backscatter sensor designed specifically for measuring suspended sediments. This is a new type of sediment sensor, superior to optical backscatter sensors (OBS) for 4 reasons. The 8MHz acoustic sensor ‘sees’ all size grains, and especially, it sees coarse grains very well, unlike OBS. The LISST-ABS response to sediment grain size is much flatter than optical turbidity sensors, i.e. LISST-ABS calibration is more stable than OBS. The LISST-ABS has a nearly 5-decade working range in concentration! The LISST-ABS is far less susceptible to fouling than optical turbidity sensors. The LISST-ABS provides analog voltage, SDI-12, and RS-232 outputs all on one connector, making it easy to integrate into existing sensor platforms.
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FlowControl-Sub

FlowControl-Sub
FlowControl-Sub is a microprocessor-controlled fully submersible 3-way valve system for use in flow-through applications on profiling platforms such as for example CTD’s or profiling floats.
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Sequoia – Accessories

Sequoia – Accessories
A range of accessories for Sequoia instruments, including deployment cages, batteries, flow tubes, mixing chambers, anti-fouling bio-blocks, cables, test chambers, custom optical paths, custom enclosures, etc.
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