Low foam media cleaning detergent with nonionic surfactants

A method of cleaning media, comprising:

• providing a detergent comprising
• water;
• between about 1% and about 5% by weight of a nonionic surfactant having an hydrophile/lipophile balance (HLB) value between about 10 and about 20, and an ethoxylation level between about 5 and about 20, wherein the nonionic surfactant is amine-free and comprises a surfactant having the chemical formula R—(OCH2CH2)n—OH, where R is an alkyl group of a parent alcohol, and n is a positive integer;
• between about 1% and about 5% by weight of a dispersing agent;
• between about 3% and about 10% by weight of a chelating agent comprising phosphoric acid;
• and
• between about 2% and about 6% by weight of an inorganic salt;
• and
• washing the media with the detergent to remove contaminants therefrom,
• wherein the detergent is substantially free of amine compounds and substantially free of anionic and cationic surfactants, and has a pH level of greater than 11, and
• wherein the chelating agent comprises hydroxyethylene diphosphonic acid (HEDP).