The suspended solids Indicator (Model: IPM) is a state of the art, easy to use meter that provides many benefits to the plant operations staff. It is a unique system that combines advanced electronics with a solid-state, optical sensor. It is a multi-range indicator designed for the measurement of suspended solids in aqueous solutions. The microprocessor-based electronics of the indicator provide a high degree of flexibility and ease of use. Data logging and the ability to download the data directly to a computer are optional features.