A one-step, hospital use disinfectant, bactericidal according to the current AOAC Use Dilution Test Method and Virucidal according to the virucidal qualification modified in the presence of 250 ppm hard water plus 5% organic serum. Cross-contamination is of major housekeeping concern. Q.T. 5 has been formulated to aid in the reduction of cross-contamination on treated surfaces not only in hospitals, but in schools, institutions and industry. Meets EPA List N criteria for use against SARS-CoV-2, the virus that causes COVID-19, 1 minute contact time.