Octopus Certified Document Ink – Blue (50ml)

Blue is a clean, classic medium-blue document ink from Octopus Write & Draw — the dependable everyday shade that belongs in every pen enthusiast's collection. Bright and legible with a traditional blue character, it's formulated for both professional and personal use, offering water resistance for added durability on the page.

Ink Properties

• Colour: Classic medium blue
• Volume: 50ml glass bottle
• Type: Water-based, document ink
• Water resistance: Yes — suitable for archival and document use
• Lubrication: Well-lubricated for smooth, consistent flow
• Dry time: Moderate
• Shading: Low — optimized for clean, consistent legibility

Compatible With

• Fountain pens (all nib sizes)
• Dip pens and drawing nibs
• Brush pens and technical pens

About Octopus Write & Draw

Based in Germany, Octopus produces reliable, document-safe inks formulated for long-term stability and everyday use. Free from harmful substances and built for writers, illustrators, and pen enthusiasts alike.