rOtring Isograph Black Pigment Ink 23 ml for Technical Pens

Technical drawing ink that delivers crisp, permanent lines without clogging fine pen mechanisms. This rOtring black pigment ink, in a 23 ml bottle, provides dense, lightfast coverage that dries quickly on drafting film, vellum, and tracing paper. Its non-clogging, free-flowing formula keeps Isograph, Variant, and Varioscript pens ready for continuous work.

Advantages

High-opacity black pigment produces sharp, reproducible lines for technical drawings, illustration, and drafting. Once dry, the ink is water-resistant, UV-resistant, and permanent, ensuring archival-quality documents. The glass bottle with dropper applicator allows precise, mess-free refilling of technical pens.

Suitable for

• Architects, engineers, and designers using rOtring Isograph, Variant, or Varioscript technical pens
• Drafting on paper, tracing paper, vellum, and drawing film
• Illustrators requiring dense, lightfast black lines

Key specifications

• Ink type: Pigment
• Colour: Black
• Volume: 23 ml
• Compatibility: rOtring Isograph, Variant, Varioscript
• Lightfastness: High
• Water resistance: High (after drying)
• Opacity: High
• Drying time: Fast
• Bottle material: Glass
• Dispenser type: Dropper/applicator
• Formula: Non-clogging, free-flowing
• Adhesion: Excellent on various surfaces
• UV resistance: High
• Permanence: Permanent once dry
• Product series: rOtring Isograph Ink
• Country of origin: Germany

Recommendations

For best results, shake the bottle gently before use and refill pens in a clean environment. Always cap pens tightly to prevent ink from drying out.