OBS

Definition of Optical Backscattering (OBS): Optical Backscattering, or OBS, is an optical method for measuring turbidity and suspended solids concentrations by detecting infrared light scattered from suspended matter. The Optical backscatter point sensor (OBS) is an effective way to measure in-situ turbidity because of: small size and sample volume, linear response and wide dynamic range, insensitivity to bubbles and phytoplankton, ambient light rejection and low temperature coefficient and low cost. This is the common definition for Optical Backscattering (OBS), other definitions can be discussed in the article