Mustepatruuna Faber-Castell 201621 sininen 18 kpl

Faber-Castell 201621 blue pen refills, sold in a pack of 18, are replacement ink cartridges designed for compatible Faber-Castell fountain pens. The cartridges contain blue water-based ink formulated to deliver consistent flow and reliable writing performance for everyday tasks. The compact, sealed design of each refill helps prevent leaks and preserves ink quality until installation.

Advantages

These refills provide uniform ink delivery and smooth line formation, reducing skipping and blotting during regular use. The standardized cartridge shape enables quick replacement with minimal handling. A pack of 18 ensures a steady supply for frequent writers, reducing the need for immediate reordering. The blue ink color offers clear legibility for notes, signatures, and document annotations.

Suitable for

• Everyday handwriting and note-taking
• Signatures and administrative paperwork
• School and office use
• Refilling compatible Faber-Castell fountain pens

Key specifications

• Ink color: blue
• Quantity: 18 refills per pack
• Cartridge type: sealed fountain pen cartridge
• Ink composition: water-based dye ink
• Compatibility: designed for compatible Faber-Castell fountain pens

How to use

To replace a cartridge, unscrew or remove the pen barrel according to the pen model instructions, withdraw the empty cartridge, and insert a new sealed cartridge firmly into the feed until it seats. Reassemble the pen and allow a few moments for the ink to reach the nib; if necessary, gently depress the cartridge or prime the nib by lightly touching it to scrap paper. Store unused cartridges in their original packaging at room temperature away from direct sunlight.

Recommendations

For consistent performance, use these refills with fountain pens specified by the manufacturer. Avoid exposing cartridges to extreme temperatures and do not puncture or refill cartridges manually. If ink flow is slow after installation, try a few light strokes on scrap paper to encourage ink flow.