Patent ID: 8235580

Claim:
A method of controlling fluids in a processing system, comprising: mixing two or more chemical compounds in a blender to produce a solution; supplying the solution to a reclaim tank; dispensing the solution to a process station; monitoring the solution at a location between the tank and the process station to determine whether at least one of the chemical compounds is at a predetermined concentration; upon determining that the at least one chemical compound in the solution is at the predetermined concentration, flowing the solution to the process station; removing at least a portion of the solution from the process station; returning the removed portion of the solution to the reclaim tank; monitoring the removed portion of the solution at a location between the process station and the reclaim tank to determine whether at least one of the chemical compounds in the removed portion of the solution is at a predetermined concentration; and upon determining that the at least one chemical compound in the removed portion of the solution is at the predetermined concentration, flowing the removed portion of solution to the process station.