Patent ID: 8591095

Claim:
A system, comprising: a chemical blender for mixing chemical compounds to produce a solution; a reclaim tank for mixing the solution from the chemical blender and a reclaimed solution from a process station; a dispense system for dispensing a mixed solution to the process station; a first chemical monitor configured to monitor the mixed solution downstream from the dispense system and to determine whether at least one of the chemical compounds is at a predetermined concentration; a controller configured to flow the mixed solution to the process station upon determining that the at least one chemical compound in the mixed solution is at the predetermined concentration as determined by the first chemical monitor; a reclamation line in fluid communication with an outlet of the process station and coupled to the reclaim tank, whereby at least a portion of mixed solution removed from the process chamber after use is reclaimed and returned to the reclaim tank; and a second chemical monitor configured to monitor the reclaimed portion of the mixed solution to determine whether the at least one of the chemical compound in the reclaimed portion is at a predetermined concentration before being reintroduced to the reclaim tank.