Abstract Paper must have certain physical properties to be suitable for use with the different printing processes. Technical specifications for paper and paper testing have been developed to secure proper quality for a specific purpose, but it is not possible to standardize paper made by all mills on a few physical and chemical tests. Such factors as appearance, color, feel, finish, formation, or printability are distinctive mill characteristics. The qualities discussed by the author are paper finish, moisture content, and relationship to printing inks.