Product Description
This is a permanent and waterproof ink for fountain pens
Technical data:
- Lightfast: 8
- pH: 7
- Surface tension: 60 mN/m
- Viscosity: 1,2 mPas
- Dampf-proff: Yes
- Heat resistant: Yes
- Color: Grey
- Content: 35 ml.
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Meet my expectation. For sketching and drawing.
From other reviews it is also good for writing, sketching and drawing.
