A method and apparatus for reducing the risk of environmental contamination from mercury spillage during carry over between processing tanks during the gold ball bond removal process by providing a self-contained compact environmentally safe system for use with toxic chemicals and liquids. The present invention provides a self-contained integrally molded enclosure upper and lower chambers separated by a partition. The partition has a plurality of stations integrally formed therein each of which is capable of containing a chemical liquid. The method comprises dipping a slide containing the semiconductor chip first into a toxic liquid then into a first decontamination station and finally into a second decontamination station.
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