Fountain pen inks from Montblanc with water resistance. Document proof to standard DIN ISO 14145-2, making them suitable for signatures where most fountain pen inks would be too easy to modify or remove.

60ml, supplied in Montblanc's famous bottle that helps you reach the last of the ink. As with other permanent inks, while it's generally very safe to use, a little bit of extra care is recommended - flush the ink out of any pen that's not going to be used for a while.