Robert Oster Green Green 50ml Ink Bottle

The Robert Oster Green Green 50ml ink bottle delivers a crisp, lively green that stays readable while bringing fresh energy to everyday writing. The tone leans bright without harshness, making it an easy choice for notes, planning, and sketching.

Color & Performance

This water-based, dye fountain pen ink lays down a saturated springlike green with appealing shading on quality paper. Flow is smooth and even, keeping fine nibs tidy while broader nibs reveal more tonal depth. On coated papers the line reads cleaner; on more absorbent stocks you will see softer edges and increased variation.

In Use

Green Green behaves reliably in common fountain pen setups, from cartridge/converter models to piston-fillers. Routine maintenance and rinsing keep pens fresh, and the color remains legible across a range of nib sizes. It is a versatile daily green that balances vibrancy with clarity on the page.

Technical Specifications

• Brand: Robert Oster
• Product: Green Green fountain pen ink
• Ink type: Water-based, dye
• Color: Green
• Volume: 50ml bottle
• Compatibility: Suitable for fountain pens using converters, refillable cartridges, and piston-fill systems