Twsbi fountain pen ink in blue comes in a 70 ml frosted glass bottle. The internal plastic component makes it easy to draw up all the ink, right down to the last drop. The bottle’s neck fits the cap from the Diamond 50.

The liquid ink is suitable for all fountain pens, flows well on paper, and has a satisfactory drying time. It is neither permanent nor waterproof.

• Type: Fountain pen
• Color: Blue
• Quantity: 70 ml
• Packaging type: Frosted glass bottle
• Ink type: Liquid
• Compatibility: All fountain pens
• Flow on paper: Good
• Drying time: Satisfactory
• Permanent: No
• Waterproof: No
• Component: Internal plastic ink-drawing component
• Cap compatibility: Diamond 50 cap