4.13 out of 5
Based on 8 reviews.

In stock
Brand: Platinum

85 in stock


With the Platinum Cartridge Adapter, you can use standard international cartridges in Platinum fountain pens, which greatly expands the ink cartridge selection available for the pens. One black standard international short ink cartridge is included.

Note: once the adapter is inserted into a pen, it may be difficult to pull out.

In 1919, Shunichi Nakata, started his fountain pen business that would later be known as “Platinum Fountain Pen Co.”. The Japanese brand is closely related to the legendary Nakaya fountain pen brand, where some of the finest fountain pens in the world are created. This expertise also goes into Platinum’s own line of fine writing instruments.

Additional information


8 reviews for Platinum Cartridge Adapter

  1. English

    esr (verified owner)

    Allows you to use a standard international cartridge in a Platinum Preppy, Prefounte and reportedly other Platinums. Also handy for cleaning if you use a syringe with a modified international cartridge to flush the nib unit.

    The adapter sits snuggle in both the Preppy and Prefounte and will require good tweezers or small needle nose pliers to remove it from the pen.

    I have used it on an EF Preppy and on a couple inks had some flow issues but not with others. The Preppy EF is dry to begin with so you might notice flow issues with drier inks.

  2. English


    Made of elastic plastic makes good seal around pen and cartridge. May be hard to remove without tweezers – in Preppy and Plaisir is sits very deeply. in Curidas it is very easy. Arrived to me without cartridge shown on photo.

  3. English


    I love Platinum pen, which has very fine nib for writing Japanese complex character, but I don’t like the pen requires Platinum unique size cartridge/converter. I know this converter is great to use European size cartridge with Platinum pen and have looked for in stores in Japan but I found Platinum has stopped to sell and not available in Japan… Now I’m very happy that I found this item here! I also thank for nice shipping of this store!

  4. English

    J M

    Great product, very helpful!
    Don’t forget to buy it alongside your platinum pen !

  5. English


    It is not a super snug fit on my Platinum 3776. I ended up using a converter.

  6. English

    Claudio Bardelle (verified owner)

    It works just fine, does its job as per product description. Platinum pens are really versatile with these really useful ‘add-ons’

  7. English

    Platinum life hacker (verified owner)

    Platinum converter is too long for my obsolete Preppy.
    I was almost giving up but this adapter with KAWECO mini piston converter made the impossible possible.
    Perfect game changer!

  8. English

    Alan Caron

    I hate to say it, but I found the Device to go from Platinum proprietary to standard international a complete washout. I ended up getting a proprietary converter which works fine.

  9. English

    Patrick Ludwig (verified owner)

    I actually use my Nakayas. Thislittle addon greatly enhances the versatility of pen use. It works on any international ink cartridge and can actually even convert a converter to meet Nakayas requirements!

    Just what I wanted!

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