A 3ml sample of Graf von Faber-Castell Cobalt Blue fountain pen ink, labeled with the name of the ink brand and color, in a plastic ink sample vial with a dip at the bottom to allow you to easily get every drop. The Graf von Faber-Castell Cobalt Blue ink is water-resistant, UV-resistant, and resistant to certain chemicals and solvents. This is a beautiful vibrant shade of blue.

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Volume - 3ml

Vial Material - Plastic

Color Group - Blue

Special Properties - Water Resistant