Japanese Patented Technology 99.7% eco-Protect Ingredients Made from 99.7% purified water and 0.24% food grade potassium carbonate with Japanese patented technology. Green product, no alcohol, no chemical residue. Kills Germs up to 99.999% STC tested and certified that the product can effectively kill following bacteria and virus, with an efficacy rate up to 99.999%: Escherichia coli, Klebsiella pneumonia, Staphylococcus aureus, Legionella pneumophila, Salmonella, H1N1