AQUAscat. Measures a profile of sound scattered by sediment or other suspended materials at one centimeter intervals.

ECO-BB9. Measures optical backscattering at nine wavelengths. Manual

ECO-BBRT. Measures optical backscattering at 117 degrees. Manual

Volume Scattering Function Meter (ECO-VSF). Measures optical scattering at a single wavelength and three distinct angles: 100, 125, and 150 degrees. Manual

See our velocimeters and particle size analyzers too, which are also used to measure acoustical backscattering.