Heart of Darkness is a nice dark black that performs well on absorbent paper.
Heart of Darkness comes in a large glass bottle with 4.5 oz of ink(approximately 133ml). This ink is "water resistant", "forgery resistant" "bulletproof" and "eternal".
For a definition of these special features see the Ink Properties tab.
Noodler's ink is known worldwide for it's special qualities and unique formulas. Founder Nathan handcrafts all Noodler's ink and is always striving to push the boundaries beyond that of typical fountain pen ink to deliver the best value ink possible.
We recommend Noodler's ink be used by experienced fountain pen users. Different inks may have some or all of the following properties.
Water Resistant: Partially or fully resistant when page is wet after ink has dried.
Forgery Resistant: Resistant to alcohol and solvents making it ideal for security documents.
Eternal: Archival quality, resistant to fading over time.
Bulletproof: Resistant to U.V light and bleach.