When we think of pollution in our rivers, lakes, or oceans, we often picture oil slicks or floating plastic bottles. But suspended sediment is an important agent that must not be overlooked. Suspended sediment can act like a vehicle for pollutants, carrying...
Primary Producers are the organisms that in general convert inorganic materials (e.g., phosphate) into organic matter (e.g. lipids) through photosynthesis. In the aquatic realm, the dominant primary producers are the phytoplankton[1]. Primary Production...
Bubbles in water are studied intensively. For modeling and measurement purposes it is sometimes assumed that bubbles are spherical, but this is only true up to a certain size: When the hydrostatic pressure difference from top to bottom of the bubble is...
Since 1995, Sequoia Scientific, Inc. has been the global leader in technologies for submersible and field measurements of particles and particle size distributions. This article shows a few examples where our instruments have been used for various dredging...
Sequoia’s LISST-200X has been designed to cover a wide range of particle concentrations. However, at high concentrations the light scattering from the particles can include multiple scattering. This will affect the measurement of particle size and...