Five black inks and Graphite were formulated to meet the demands of printmakers who want deep rich black inks with good working characteristics. Portland Black and Portland Cool Black are ideal for edition printing; both offer a strong line and medium plate tone. For engravers, printers of mezzotints, or others who need more resistance from their ink, Portland Stiff Black is also available. All inks are bound in the highest quality Burnt Plate Oil.