Graf von Faber-Castell 75ml Ink Bottle - Carbon BlackInspired by the colors of nature, Graf von Faber Castell inks are carefully formulated with the highest quality ingredients for smooth ink flow. They also resist drying out in the pen, so you can pause for thought and start writing again immediately without hard starts breaking your concentration. Document proofed: smudge resistant, reproducible, light fast and waterproof, cannot be erased and is resistant to many chemicals and solvents. Highest