Abstract: A method of producing a disinfectant or sterilizing liquid, cream, ointment, paste, or gel by dissolving in a solvent a stable ready-to-use dosage form containing coloring matter and an organic chloroxidizer acting as a chlorine donor releasing active chlorine. The coloring matter is in its maximal level of oxidation. The chloroxidizer with coloring matter has a pH of 4-8 and is present in a sufficient quantity to disinfect or sterilize the surface, vessel, or tissue as required while the colored appearance of the liquid, cream, ointment, paste, or gel is stably maintained over a period of time which exceeds the period of time that the disinfectant would be normally used for that purpose.