Koh-I-noor Drawing Ink

Ideal for use in a Rapidograph or other technical pens, in airbrush, or with a dip pen.
It’s available in 17 intermixable brilliant transparent colors, they can be diluted with boiled or distilled water.
Transparent, water- resistant
Also available in Opaque Black and White
Conforms to Astm – D- 4236
For Technical Pens, airbrush, crowquill, on paper and board