A document-class roller pen that meets even the toughest of the ISO 14145-2 conditions, such as erasure resistance, water resistance, chemical resistance, light resistance and bleaching resistance tests, (ISO 14145-2 clause 4.1 to 4.8). This ISO standard stipulates that a roller pen for documentary use should meet special stringent requirements, in addition to those for general use, (ISO 14145-1).
So, what does the compliance means for the Writers?

The documents written with Dollar's Official roller pen:-

Will be timeless and remain clearly legible for decades,
Will not fade away when archived,
Will be tamper-evident against any modifications, washing or even chemical fixing

All these strong security features are presented in a friendly design, that gives an immense pleasure to write with.