Evaluation of 3% Hydrogen Peroxide for Use as an Environmental Disinfectant Aboard the Space Station Freedom

We evaluated the ability of a 3% (8800 μM) solution of hydrogen peroxide to kill 12 strains of bacteria and 12 strains of fungi. A 1:4 dilution of 3% H₂O₂, equivalent to 1100 μM, was lethal to all the tested strains. If the situation calls for a nonaggressive disinfectant without residue or toxic aftereffects, 3% H₂O₂ seems an ideal choice.