Turbidity is the relative clarity of a liquid as the result of suspended solids. Typically, turbidity measurements are taken by using a beam of light to detect the presence of particles and measuring the difference between the amount of light that is emitted from a source and the amount received by a detector. In bioprocess operations, liquid turbidity often is measured postfiltration to detect “break through,” or undesired materials coming from a filter, which provides an overall assessment of filter…