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Free Flowing - Blue
Osmiroid is one of the 713 brands in Inktend's built-in ink catalog.
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Paper & pairing
Blues and navies are the most broadly "safe" fountain pen colors: legible, professional, and unlikely to raise eyebrows in an office. This ink will behave predictably on most fountain-pen-friendly paper. Cheap, highly absorbent paper (standard copier paper) will dull any ink's saturation and can cause feathering or bleed-through with wetter nibs.
About Osmiroid
Osmiroid was a British pen brand of E.S. Perry Ltd, founded in 1918 by a descendant of the 19th-century nib maker James Perry, with roots in London before moving to Gosport. From the late 1950s it concentrated on affordable fountain pens with interchangeable nibs for schools and calligraphers, becoming a standard calligraphy brand before production eventually ceased.
Storing and using the bottle
Bottled fountain pen ink has an effectively long shelf life when kept capped and out of direct sunlight: most inks remain usable for years. The main risk isn't the ink spoiling, it's a pen sitting inked and unused for weeks: that's what causes clogs, not the ink's age.
Frequently asked questions
Similar shades By colour distance
Color shown is a close digital approximation of a typical swatch, not a calibrated color match.