Dr. Ph. Martin's TECH Drawing Ink

Dr. Ph. Martin's TECH Drawing Ink contains fine artist's pigments to ensure transparent, lightfast, archival results. Designed specifically for use with technical pens, calligraphy pens, and drawing pens. It also works well with brushes and airbrushes. TECH Drawing Ink is acid-free and waterproof. Ideal for design and illustration. Each 1.0 oz (30 ml) bottle comes with it's own dropper.