Värikoostumus, happi- ja/tai pH-indikaattori ja pakkaus

摘要

The invention concerns an ink composition comprising an oxidizing and reducing agent and/or pH colorant as the dye, polymeric material as the binder, as well as a pH adjuster and volatile solvent. Further, the invention concerns a method for manufacturing an oxygen and/or pH indicator, in which the ink composition is printed and reduced, or reduced using a volatile reducer and printed; an oxygen and/or pH indicator manufactured by the method, as well as a package for stating a leakage, a change caused by oxygen content and/or deterioration of a product.