Glass Cleaner Concentrate is GS-37 certified specially for streak-free and smear-free cleaning of glass and other reflective surfaces. Formula offers economical use dilution and contains no added fragrance or volatile organic ingredients that can adversely impact indoor air quality. Bright color makes it easily identified when diluted into secondary containers. Formula is nontoxic, biodegradable, noncaustic and nonflammable. Glass cleaner is safe to use on plastics.