MVSM
Multi-Spectral Volume Scattering Meter

The Multi-spectral Volume Scattering Meter (MVSM) is an in situ water-based optical instrument. It measures the volume scattering function (VSF) across eight wavelength bands (443-620 nm) at scattering angles from 0.5 to 179 degrees, with 0.25-degree intervals. It can also operate at a single wavelength of 532 nm. The device uses a rotating prism and provides two measurements of VSF: one from 90 to 180 degrees in ascending order and another from 180 to 360 degrees in descending order. The MVSM has a sample volume of 1.5 liters and collects measurements in about 1 minute at each band.