No person shall alter any controlled substance from the original compounded form by evaporation or other means to increase the concentration of narcotic drug contained therein. Altered preparations having a greater concentration of schedule V narcotic drug content than specified under provisions of section 3719.15 of the Revised Code, shall be classified as a schedule III narcotic drug.
Prohibition against altering substance to increase concentration
Ohio Rev. Code Ann. § 3719.161, under Chapter 3719 | Controlled Substances.
Ohio Rev. Code Ann. § 3719.161