Noodler's Ink Blue Ghost, 4.5 oz of fountain pen ink in a glass bottle and includes a Noodler's "Charlie" eyedropper fountain pen. Blue Ghost is a completely invisible fountain pen ink, except when exposed to UV light.
- Visible under ultraviolet/black light
- "Bullet Proof"
- Includes an eyedropper highlighter pen
- Bottle cap has built-in eyedropper for simple filling
- 4.5 oz of fountain pen ink (~133 mL)