A Light-Scattering Apparatus for the Study of Cellular Suspensions

A system is described which uses scattered laser light to study the kinetics of cellular suspensions. The scattered light is collected by optical fibers placed at 10°increments around the cuvette. With a novel normalization scheme all outputs are made proportional to the percentage changes relative to the values measured upon insertion of the sample. The system includes a noise level detector to give an output proportional to the relative amplitude of fluctuation of the light intensity.