Noodler\’s Heart of Darkness Bottled Ink is a slightly darker and faster-drying alternative to the Noodler\’s Blackink. Noodler\’s Bottled Ink are all hand made 100% in the USA in small batches with unique labels often matching the inspiration of the color. With a wide range of colors and ink properties, good performance can be found on all kinds of writing papers, including those not considered fountain pen friendly. Color Family -Black Size: 16oz Bulletproof: This ink is water resistant on cellulose-based papers and resists all known tools of forgers, including UV light, bleach, alcohol, and other solvents. This ink may still be vulnerable to smearing when exposed to water. Eternal: Made to resist the effects of time, this ink is archival, fade resistant, and unaffected by humid or acidic conditions. The ink color you receive may differ from the one pictured. Because Noodler\’s inks are hand made in small batches, the colors can vary slightly from one bottle to another. Because Noodler\’s Inks are filled to the brim, we recommend care be taken when first opening to avoid ink spillage.