Patent ID: 7799686

Claim:
A polishing method, comprising: preparing a first constituent element; preparing a second constituent element; preparing a diluent; mixing the first constituent element, second constituent element and diluent at the same time or in any order to prepare a metal-polishing liquid; applying the metal-polishing liquid to a polishing pad set on a platen; and polishing a surface of an article to be polished with the polishing pad, by moving the polishing pad and the surface of the article relatively to each other while keeping the surface of the article in contact with the polishing pad, wherein the metal-polishing liquid comprises an ingredient group consisting of an oxidizing agent, an oxidized-metal etchant, a protective film-forming agent and a dissolution promoter for the protective film-forming agent and water, the first constituent element contains at least one ingredient of the ingredient group, and the second constituent element is a concentrated liquid wherein at least one of the ingredients of the ingredient group, other than said at least one ingredient, is dissolved in water.