Yes, this is the hard to find 99% grade! 99% Isopropyl Alcohol (also known as Isopropanol and rubbing alcohol) finds use in the art world as a clean up solvent for chemicals such as polyurethane and silicone rubbers, resins, hardeners, dyes, colorants, and more. We find the 99% Isopropyl Alcohol extremely effective for clean up of epoxy resins and epoxy hardeners. Have dirty brushes? Dirty resin containers? Epoxy drips? Plastilene clay need smoothing? 99% Isopropyl will do the job. Some other solvents may be more effective for some applications (Acetone for Polyester Resin for example), but this works great as an all purpose solvent, featuring fast drying, low vapor usage, and is safe to use on plastics. (unlike Acetone).