Robert Oster Ink, 50ml - Deep Sea

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

See all Robert Oster products