News
January 23, 2024
In-situ absorption meter based on the integrating sphere principle.
The Hyper-a is designed for precision, in-situ bulk absorption measurements of dissolved and suspended material in water. A removeable ND filter in the cavity wall can be used to track...
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April 4, 2023
The LISST-Deep instrument is a 4,000 m rated version of Sequoia’s LISST-200X workhorse.
The LISST-Deep generally has the same capabilities as the LISST-200X but extends the operating depth range to 4,000 m.
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March 10, 2021
Optical Transmission and Beam Attenuation
LISST-Tau is a high-precision transmissometer for underwater vehicles, profiling packages, CTDs, and other systems. With high-quality optics and a carefully selected LED source, it transmits a collimated beam...
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July 29, 2019
Sequoia presents the world’s first commercially available hyperspectral backscatter instrument – Hyper-bb.
The Hyper-bb is a submersible single-angle backscattering instrument with configurable spectral channels. The primary measurement delivered...
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June 24, 2019
The LISST-AOBS Super-Turbidity sensor is a sensor to measure suspended sediment concentration (SSC).
Super-Turbidity involves pairing a LISST-ABS with a turbidity sensor using a weight factor, which results in a single, combined output from the two sensors....
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