Sailor's Pigmented Souboku ink is a pigmented blue-black ink that is safe to use in any pen. The pigmentation allows the ink to be incredibly water resistant, as well as contributes to the intense shading of the ink. Despite being a pigmented ink, the color itself is slightly unsaturated.
- Due to the pigment particles contained in this ink, it is recommended cleaning your fountain pen more often than you would with a dye-based ink.
