Azure #4 fountain pen ink by KWZ Poland.
KWZ fountain pen inks are made by Konrad Żurawski by applying modern chemistry techniques to small-batch production. While KWZ is well known for their iron galls, this standard series is suitable for use in all fountain pens. Another point of difference is the colour selection, which is both wide and nuanced.
The Azure #4 handmade bottle contains 60mL, while the hand-written label is a defining feature of KWZ. They are a remarkable find for those who appreciate colour intensity and wet flowing fountain pen inks for a great writing experience.