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Sequoia Scientific

Marine

Sequoia Scientific has been building instruments for making measurements in the Marine environment for almost 20 years.   The LISST-100 (later upgraded to the LISST-100X) has become the go to tool for measuring particle size and concentration in the ocean.  Many other LISST products have been developed over the years.  The LISST-STX measures settling velocity in-situ.  The LISST-Holo is a holographic particle imaging system that can produce images of particles as well as obtain size distributions.  The LISST-VSF and LISST-Stokes are specialized instrument made specifically for Ocean Optics community.  The FlowControl is our newest product and is used with other optical instruments such as WetLabs AC-S to provide the ability to automatically switch between filtered and unfiltered source water and thus greatly improve the accuracy of data.  HydroLight is widely used software for computing underwater radiance distributions and related quantities as needed for optical oceanography and ocean-color remote sensing.  EcoLight-S is a subroutine package for computing underwater irradiances for use within ecosystem and iterative inverse models, where extremely fast run times are required.   Click on one of the products below for more information.


LISST-100X

This product is superseded by LISST-200X. The LISST-100X is a submersible multi-parameter system for in-situ observations of particle size distribution...

LISST-200X

This model supersedes the LISST-100X. The LISST-200X marks a major advance in technology of our workhorse LISST-100X submersible laser-diffraction...

LISST-ABS

Sequoia Scientific, Inc. is proud to offer the first low-cost acoustic backscatter sensor designed specifically for measuring Suspended Sediment...

LISST-Deep promo photo

LISST-Deep

The LISST-Deep instrument obtains in-situ measurements of particle size distribution, optical transmission, and the optical volume scattering...

LISST-Portable|XR with ultrasonic probe inserted

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...

Particle Tracer Studies

Sequoia Scientific has partnered with Partrac Ltd of Glasgow, Scotland to provide particle tracer studies. Partrac has developed a method of...

LISST-Holo Digital Holographic Imaging System

LISST-Holo

The LISST-Holo from Sequoia is the world’s first commercially available submersible Digital Holographic Particle Imaging System. The system...

LISST-STX

The LISST-STX is a submersible field instrument developed for in-situ observation of the size-dependent settling velocity distribution of suspended...

LISST-VSF Detail

LISST-VSF

World’s first autonomous, submersible instrument for measuring the volume scattering function (VSF) of water with depolarization. Measures...

LISST-STOKES

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

FlowControl-Lab

FlowControl-Lab

FlowControl-Lab is a computer-controlled 3-way valve system for use in flow-through applications on board research vessels or for dock-side sampling. The...

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...

EcoLight-S

EcoLight-S(ubroutine) is an extremely fast RTE (radiative transfer equation) solver developed for use as the optical component of coupled physical-biological-optical...

HydroLight

The HydroLight radiative transfer numerical model computes radiance distributions and related quantities (irradiances, reflectances, diffuse...