The Akkerman inks have been given names related to the city The Hague. For example: KoninginneNach-Blauw, Binnenhof Blues, Shocking Blue, Parkpop Purper or/and Rood Haags Pluch. The faceted inkbottle is characterized by the long-neck, in which there is a glass marble. When the closed inkbottle is tilt, the neck of the bottle fills itself with ink. Horizontal again the marble will fall back and prevent the ink to flow back into the bottle. In the neck of the bottle there is now a small reservoir and you can easily fill your fountain pen, even when the pot is almost empty!