This 30ml glass bottle of Monteverde Horizon Blue fountain pen ink is specially created with Monteverde's Ink Treatment Formula, which prevents the ink from drying out in your pen. This formula also improves both ink flow and drying time, as well as helping to lubricate and protect the ink feed system from corrosion and clogging.

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Volume - 30ml Bottle Material - Glass Color Group - Blue Special Properties- Lubricated