ISOREDINK Rotring Isograph Drawing Ink in red for refillable technical pens. Suitable for tracing paper, vellum, drawing papers and polyester based drafting film.
- Ink for Tracing Paper, Vellum, Drawing Papers & Polyester based Drafting Film.
- Archival Quality Pigment Ink.
- Finely Processed to Flow Through Technical Pen Nibs.
- Red Ink is Generally for Making Corrections, Editing Documents, and Creating Notations hat need to Stand out Clearly Against Standard Black or Blue Ink.
- Available in 23ml Bottle.
Rotring Technical Pen Ink is formulated to work with technical pens to provide maximum opacity line work.
To achieve this opacity the pigment, namely soot, is machined to the finest possible tolerances.
Rotring Technical Pen Ink is a suspension type - particles of pigment suspended in a liquid - as compared to a solution - dyes dissolved in a liquid.
The liquid in this case contains glue and shellac which combined with the soot is a recipe for clogging a pen unless care is taken to keep it flowing.
Regular cleaning of the pen, especially the breathing helix, will help maintain flow.