OVJ Waterproof Fountain Pen Ink 300ml

OVJ Waterproof Fountain Pen Ink 300ml is formulated for consistent flow, strong colour saturation, and reliable permanence on paper. Designed for fountain pen use, this ink delivers smooth writing performance while maintaining clarity and definition in both fine lines and broader strokes. The waterproof formulation ensures that marks remain intact when exposed to moisture, making it suitable for documents, sketching, and layered media work where durability is required.

The ink uses a stable composition that balances flow and control, allowing it to pass through the nib without interruption while resisting feathering on suitable paper. Waterproof fountain pen inks typically rely on pigment or specialised bonding properties that adhere to paper fibres, resulting in resistance to water, fading, and smudging over time. With its large 300ml volume, this bottle supports extended use in studio, classroom, or daily writing environments, reducing the need for frequent refills while maintaining consistent output.