Robert Oster School Blue 50ml Ink Bottle

Robert Oster School Blue 50ml Ink BottleRobert Oster School Blue 50ml Ink Bottle delivers a clean, reliable everyday blue with the easy legibility writers want for notes, journals, and correspondence. The tone lands in a balanced medium range, bright enough to stand out on the page while remaining refined for professional use. Color & Performance This dye based, water soluble fountain pen ink offers gentle shading on fountain pen friendly papers, adding character without sacrificing

Robert Oster School Blue 50ml Ink Bottle delivers a clean, reliable everyday blue with the easy legibility writers want for notes, journals, and correspondence. The tone lands in a balanced medium range, bright enough to stand out on the page while remaining refined for professional use.

Color & Performance

This dye-based, water-soluble fountain pen ink offers gentle shading on fountain-pen-friendly papers, adding character without sacrificing clarity. Flow is smooth and well-behaved across a wide range of nibs, with dry times that vary by paper and nib width. As a water-soluble formula, it is not waterproof, making cleanup and pen maintenance straightforward.

Bottle & Practical Details

The 50ml bottle is compact and travel-friendly, with a secure screw cap for everyday use at the desk or on the go. The recyclable PET construction reflects Robert Oster's practical, environmentally mindful approach. School Blue loads cleanly in converters and piston fillers and pairs well with daily writing, study sessions, and casual sketching.

Technical Specifications

• Brand: Robert Oster
• Color: School Blue (medium blue)
• Ink type: Dye-based, water-soluble fountain pen ink
• Volume: 50ml
• Bottle material: Recyclable PET
• Water resistance: Low
• Origin: Australia
• Recommended use: General writing on fountain-pen-friendly paper