Each brand and colour formulation has its own wiriting characteristics. and performance in various brands of pens. One of the advantages of writing with a fountain pen is the array of colours of inks.
Quick Review – Heavyweight Fountain-Pen-Friendly Envelopes
Glenn's Pens - great fountain pens and ink
Ink Notes: Montblanc Jonathan Swift Seaweed Green
J. Herbin Cacao du Brésil Waterman pens, Fountain pens calligraphy, Beautiful pen
Diamine Ink - Green- Glenn's Pens
Ostrich Inks Part 1 — Mountain of Ink
Gourmet Pens: Ink Shot Review: Omas Sepia @GouletPens @Omas_Official
The Colours of Fountain Pen Ink - Glenn Marcus Pen Views
Diamine Ink - Blue - Glenn's Pens
Fountain pen ink - Wikipedia
Ink Review: Pelikan Edelstein Smoky Quartz - The Well-Appointed Desk
Vancouver Pen Club: 2022