When you have several inks, you quickly lose track of them. A comparison with other inks is then no longer possible, also the choice of the ideal ink becomes more difficult. This is where the ink cards from The Well-Appointed Desk called Col-o-ring can help. If you own a fountain pen, you also have ink. Mostly even several. And then gladly also not from cartridges. But what exactly did the ink look like again? And…