These etching inks are formulated for professional printmakers who want strong reliable inks for edition printing. The palette of pure intense pigments offers a broad range of color mixing potential. The line offers a variety of blacks and graphite that are formulated to meet the demands of printmakers looking for deep rich blacks 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 available.