The main ingredient of Copic ink is alcohol. Pure alcohol itself does not have pH level unless it’s dissolved in water. The pH level for infinitesimal quantity of other constituents contained in Copic ink are approx. 6.0 – 8.0. According to the law of Japan, household products with pH between 6.0 and 8.0 are considered as pH neutral. Therefore, we can say Copic ink falls into the category of pH neutral.
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