Abstract: A silver recovery and monitoring system including a sensor for transmitting a silver concentration signal in response to the concentration of silver in a fluid, means for determining whether the silver concentration signal indicates the concentration of silver in the fluid to be above a predetermined silver level and for initiating a silver alert signal in response to a determination that the silver concentration signal indicates the concentration of silver in the fluid to be above the predetermined silver level, and means for transmitting a notification signal to a silver monitoring station in response to the silver alert signal.

Abstract: Apparatus and methods for monitoring of dissolved (ionic) heavy metal residuals in liquid process stream or liquid waste (effluent) streams, as examples, after recovery and collection of such metals from a laboratory, medical, industrial or manufacturing process stream. An automatic controller is employed to deliver a sample volume of liquid from the stream to a measurement chamber, adjust the conductivity of the sample volume within the measurement chamber to a predetermined conductivity at a predetermined conductivity measurement temperature, employ an ion specific electrode and a reference electrode to make a voltage measurement representative of the concentration of specific metal ions within the sample volume at the predetermined concentration measurement temperature, record the voltage measurement, and flush the measurement chamber.