Surface active cleaning agent and/or radioactive decontaminant, for cleaning and/or decontaminating glassware, ceramics, rubbers, plastics, stainless steel and ferrous metals. Supplied as a liquid concentrate, for dilution with water. For ‘manual’ cleaning or for use in an ultrasonic cleaning bath. Bactericidal, non-flammable and totally rinsable. Does not contain phosphates, enzymes, EDTA/NTA or chlorine bleaches.