Patent ID: 8057681

Claim:
A washing solution cleaning apparatus, comprising: a base unit; a washer bath; a centrifugal filter secured to the base unit and configured to remove contaminants from a washing solution from said washer bath that is pumped through the centrifugal filter; a concentrate tank configured to collect the washing solution exiting the centrifugal filter, and to direct fluid to the centrifugal filter, an ultra filter or the washer bath; the ultra filter secured to the base unit and located in the fluid flow path of the washing solution leaving the centrifugal filter, the ultra filter configured to remove further contaminants from the washing solution and direct filtered fluid to the concentrate tank and/or the washer bath; and an activating unit that analyzes the washing solution to determine a chemical composition of the washing solution; wherein the analysis is performed by a sensor associated with at least one of the washer bath and concentrate tank, and results of the analysis are automatically provided to a control unit electrically connected to the centrifugal filter and ultra filter to operate the centrifugal and ultra filter to direct fluid to the washer bath depending on its composition.