Ink refill cartridge for MW50M red MWR1-B Pentel, single-color red ink

Replacement ink refill cartridge compatible with MW50M model, Pentel MWR1-B in red. This single-color red dye-based ink refill is intended for use in compatible Pentel writing instruments and markers. It delivers consistent red marking suitable for writing, labeling and routine marking tasks in office, school and light industrial environments.

Advantages

The cartridge provides a reliable flow of red dye-based ink for clear, visible marks. Its single-color format simplifies replacement and inventory management. Designed for compatibility with MW50M-type holders, the refill is compact and straightforward to install. The dye-based formulation dries quickly on most paper surfaces and is suitable for standard marking and writing tasks.

Suitable for

• Everyday office writing and marking
• School assignments, corrections and annotations
• Labeling files, folders and packages
• Light industrial marking on paper and cardboard

Key specifications

• Ink color: red
• Ink type: dye-based
• Compatibility: MW50M-compatible Pentel writing instruments
• Format: single-color refill cartridge
• Typical applications: writing, marking, labeling

How to use

Remove the empty cartridge from the compatible Pentel holder according to the instrument’s instructions. Insert the red refill cartridge until it seats securely and test on a scrap of paper to ensure ink flow. Store the instrument capped when not in use to prevent drying. Replace the cartridge when ink output becomes faint or irregular.

Usage recommendations

Use on paper, cardboard and similar porous surfaces for best results; avoid prolonged contact with non-porous materials. Allow marks to dry briefly to reduce smudging. Store replacement cartridges upright at room temperature and away from direct sunlight to maintain ink performance.