Fountain Pen Ink Diplomat 30 ml — Diplomat black sepia ink in bottle

Diplomat fountain pen ink in a 30 ml glass bottle is a concentrated black sepia ink formulated for use with fountain pens and ink converters. The bottle contains a washable liquid pigment intended for everyday handwriting, calligraphy and sketching. Its compact glass packaging allows precise filling of pen reservoirs and supports refillable systems to reduce cartridge waste.

Advantages

The ink delivers consistent flow and even shading on standard fountain pen papers without excessive feathering. The 30 ml glass bottle provides controlled filling and is easy to store. The black sepia shade offers a warm, dark tone suitable for both formal writing and creative sketching. The formulation is compatible with most fountain pens designed for bottled inks and works with converters and piston-filling mechanisms.

Suitable for

• Everyday handwriting and note-taking
• Calligraphy practice and finished pieces
• Sketching and ink drawing
• Refilling converters and piston reservoirs

Key specifications

• Volume: 30 ml
• Color: black sepia (warm dark brown/black tone)
• Packaging: glass bottle for controlled pouring
• Compatibility: formulated for fountain pens, converters and piston fillers

How to use

Use the bottle to refill your fountain pen converter or piston reservoir following the pen manufacturer’s instructions. Submerge the nib and feed into the ink, operate the converter or piston to draw ink into the reservoir, then wipe excess ink from the nib and feed with a lint-free cloth before reassembling. Allow a brief settling time after filling to prevent initial blotting. For intermittent use, store the pen capped and upright or horizontally according to the pen maker’s recommendation.

Usage recommendations

For optimal performance, use fountain pen friendly paper to minimize feathering and bleeding. Clean your pen periodically when changing inks or after extended storage to avoid clogging; flush with lukewarm water until clear. Keep the bottle tightly closed and store in a cool, dark place to preserve color and consistency.