Description
Reviews
| Brand | - |
| Category | Stationery, Educational Electronics & Office Supplies / Pen Ink, Refills & Cartridges |
| Origin | - |
| Brand | Platinum |
| Ink Type | Dye-Based Non-Carbon |
| Cartridge Model | INK-400 |
| Converter Model | CONV-800A |
| Compatibility | Universal European Standard |
| Package Contents | 6 Cartridges + 1 Converter |
| Ink Color | Black |
| Special Feature | Clog-Resistant Formula |
| Country of Origin | Japan |
| Item Weight | 15 grams |
Anonymous
Mar 17, 2026
Rating: 5/5
Finally, no more clogged pens!
I have several vintage fountain pens that would always dry out and clog with other inks. The Platinum INK-400 has been a lifesaver. It flows smoothly even after sitting unused for a week. The included converter is sturdy and holds a good amount of ink.
Anonymous
Mar 09, 2026
Rating: 5/5
Smooth operator
The flow consistency is impressive. No hard starts or skipping. The CONV-800A converter has a nice piston mechanism that feels premium compared to cheaper alternatives I've tried.
Anonymous
Mar 08, 2026
Rating: 5/5
Perfect for students
Bought this for my daughter who uses her fountain pen sporadically. She used to struggle with hardened ink, but this dye-based formula stays liquid. The converter is easy for her to clean and refill herself.
Anonymous
Mar 04, 2026
Rating: 4/5
Great value bundle
The cartridges fit perfectly in my Lamy Safari. The ink is very wet and lubricated, which makes writing a pleasure. I took off one star because the black isn't as deep as some carbon inks, but for daily writing, it's excellent.
Anonymous
Mar 04, 2026
Rating: 4/5
Good standard black
Reliable ink for everyday note-taking. It dries reasonably fast on standard paper without too much feathering. The pack provides great value since you get both cartridges and a converter to try both methods.
Anonymous
Mar 02, 2026
Rating: 5/5
Saved my old Parker
My old Parker pen was practically unusable with other brands due to clogging. After flushing it and using these Platinum cartridges, it writes like new again. Highly recommend for anyone with finicky pens.
Q: Is this ink waterproof?
A: No, this is a dye-based non-carbon ink, so it is not waterproof. It is designed specifically for smooth flow and preventing clogs rather than water resistance.
Q: Will these cartridges fit a Pilot Metropolitan pen?
A: Yes, the INK-400 cartridges follow the standard European size, which is compatible with the Pilot Metropolitan, Lamy, Twsbi, and most other major fountain pen brands.
Q: Does the ink come in colors other than black?
A: This specific bundle includes only the Black INK-400 cartridges. However, Platinum offers the INK-400 series in various colors like Blue, Red, and Green sold separately.
Q: Can I mix this ink with other brands in the same pen?
A: While technically possible, we generally recommend flushing your pen thoroughly with water before switching ink brands to prevent any chemical reactions or color muddying.
Q: How much ink does the CONV-800A converter hold?
A: The CONV-800A typically holds approximately 0.9ml to 1.0ml of ink, which is slightly more than a standard cartridge.
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