This section of ink includes both Permanent and Document inks. They are both similar but do have differences. Document Inks- are permanent and produced according to European requirements under ISO 12757-2 they are tested and found to be resistant to erasure, ethanol, hydrochloric acid, ammonium hydroxide, and bleaching. These inks are suitable for archiving and will last a long period of time. Permanent Inks- are as named permanent inks like document Inks but may not have the same level of protection and have not been certified as document Inks by ISO 1275-2.
