Patent ID: 7101517

Claim:
A processing solution preparation and supply apparatus for preparing a processing solution for use in processing of a substrate on which an element is to be formed, and supplying said processing solution to an apparatus for processing said substrate, comprising: a preparation bath to which a solid material powder of said processing solution and pure water are supplied, and in which said processing solution is prepared by dissolving said solid material powder in said pure water; a solid material supply unit which is connected to said preparation bath and stores said solid material powder; a pure water supply unit which is connected to said preparation bath, and in which said pure water is circulated or allowed to flow substantially constantly; a pipeline which is connected to said preparation bath and a substrate processing apparatus, and through which said processing solution is supplied from said preparation bath to said substrate processing apparatus; and a dissolution assistant supply unit which is connected to said preparation bath and stores a dissolution assistant for promoting dissolution of said solid material powder in said pure water.