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Sequoia Scientific

Environmental

Environmental monitoring often requires real-time measurements of parameter in the field under often challenging conditions.  Measuring particles in particular requires measurements that our done very close in time to the sampling of the water.   As soon as the water is taken out of its original environment and placed into a sample bottle it is already beginning to change.  Particles are settling to the bottom and possibly clumping together.  When these samples are later processed they need to be mixed very hard or even ultrasonicated to bring the samples into solution to measure particle size and concentration.   Now the particles are not the same as they were in the original environment.  Sequoia developed instrument that are portable and field deployable that allow measurements to be made immediately after sampling (LISST-Portable|XR) or automatically on a regular schedule (LISST-StreamSide) by pumping water through the instrument.  In addition we have developed automatically controlled three-way valves (FlowControl) that can be used to select multiple sources or filtered and unfiltered source water.  Please click on the instruments 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This product is superseded by LISST-200X.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

This is a low-cost sensor designed specifically for measuring Suspended Sediment Concentration at a point. It represents an advance over turbidity...

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...

LISST-StreamSide

The LISST-StreamSide is developed specifically for monitoring applications, for example sediment monitoring in shallow streams and rivers or...

Particle Tracer Studies

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

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...