A concentrated formula for use on pre-cleaned environmental surfaces such as masks, tubing, nebulizers and other equipment. Kills the AIDS virus and microorganisms on hard, nonporous, pre-cleaned surfaces. Also highly effective against gram-negative and -positive bacteria. Has a pleasant odor, is nonstaining and features a one-step dilution process that makes it easy to use. One pint of concentrate makes 16 gallons of disinfecting solution.