Spectrum Noir Alcohol Ink Refill 30ml-Blender This package contains one 30mL bottle of ink For use with Spectrum Noir alcohol markers The cap of each has an eye-dropper style for ease of use Available in a wide variety of colors (each sold separately) Conforms to ASTM D4249 Add each layer while the previous layer is still wet. The fluid helps "bleed" or "blend" the colors together. For a smooth blend, do not leave white space between strokes. Color small areas at a time to prevent ink from drying between layers. Light & medium ink is blended with your light marker (the lighter of the two colors) Medium and dark ink is blended with your medium marker (the lighter of the two colors)