Robert Oster Deep Sea is a premium fountain pen ink known for its rich, saturated colour and reliable performance. The deep blue-green tone offers balanced depth with subtle shading, making it suitable for everyday writing, journaling, note-taking, and creative projects. Formulated for smooth flow and minimal feathering on fountain-pen-friendly paper, this ink performs consistently across a range of nib sizes.
Features
• Premium fountain pen ink from the Robert Oster Signature line
• Deep blue-green colour with subtle tonal variation
• Smooth, consistent flow suitable for daily writing and creative use
• Performs well on fountain-pen-friendly paper with minimal feathering
• Lightweight, durable PET plastic bottle for easy handling
• Wide bottle opening allows comfortable filling
• Made in Australia
Specifications
• Colour: Deep Sea (deep blue-green)
• Volume: 50 ml
• Ink type: Dye-based fountain pen ink
• Bottle: PET plastic bottle with screw cap
• Suitable for: Fountain pens (clean thoroughly when switching inks)
Non Waterproof