Platinum Chou Kuro Fountain Pen Ink $50.88 + Delivery ($0 with Prime/ $59 Spend) @ Amazon JP via AU

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Platinum Chou Kuro Fountain Pen Ink $50.88 + Delivery ($0 with Prime/ $59 Spend) @ Amazon JP via AUAffiliate
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Entropy Reseller on 12/04/2026 - 20:25 amazon.com.au (1265 clicks)
Last edited 13/04/2026 - 18:55 by 1 other user
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Fountain pen lovers rejoice! Platinum Chou Kuro is the blackest black ink for fountain pens and is usually ~$90; I have never seen it below $80 so this is an absolute bargain. Can also combine with the buy 2 eligible items get 11% off that expires on the 14th.

Check out some reviews before deciding if this ink is for you as there are some additional cleaning requirements from the manufacturer although I've never had a problem cleaning it the same as any other ink (using tap water only).

Product description from Amazon:
Ultimate Carbon Ink for Fountain Pens, Achieving the Deepest Black To meet the demand of deeper black ink, Platinum Pen has developed the ultimate carbon ink for fountain pens that achieves the deepest black yet. The ink also boasts exceptional water and light resistance, resulting in the unparalleled "Blackest Black" ink. ※When cleaning the pen nib after using Chou Kuro ink, use purified water available at pharmacies, etc. Avoid washing it with tap w ater as it reacts with minerals contained in the water and makes it diffi cult to remove the stains.

Price History at C CamelCamelCamel.
Home & Garden Ink Platinum Pen

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  • Deterrence on 12/04/2026 - 21:12
    +8

    Notice me penpai!

  • Schrodinger on 12/04/2026 - 22:50

    Very good price for this ink but I'm contempt with the Sailor Kiwaguro.

    This is probably it if someone wants the blackest black and use black often enough to justify the purchase.

    • Dreamcast on 13/04/2026 - 04:45
      +1

      Got any blacker?

      • Bobss on 13/04/2026 - 07:52
        +1

        If it was any blacker you'd fall in!

  • lemonteaorz on 12/04/2026 - 22:51
    +2

    Nice ink, bought one when I was in high school

    • airtime on 12/04/2026 - 23:18
      +6

      You must be just out of high school? Platinum Chou Kuro ink was only launched in 2023.

      • lemonteaorz on 13/04/2026 - 00:42
        +4

        lol, i mixed it up with Sailor black ink, it's also called something like blackest black

        • Schrodinger on 14/04/2026 - 00:42

          That's the Sailor Kiwaguro. Got the first bottle about 8 years ago

  • subroc on 12/04/2026 - 23:01

    Thanks OP. I haven't bought a new ink in a couple of years, but couldn't resist this one.

  • Andrew Ong on 12/04/2026 - 23:02
    +1

    I got a bottle a week ago at $68, this is a great price. Got 2 more, thanks OP!

  • airtime on 12/04/2026 - 23:19
    +1

    OP! I hate you ;-) I promised myself no more fountain pen related purchases in April. Here you go making me break that promise.

  • airtime on 12/04/2026 - 23:20
    +4

    p.s. I'd love to see more fountain pen love / listings on OzBargain.

  • airtime on 12/04/2026 - 23:22
    +4

    p.p.s Platinum Chou Kuro is a pigment based ink. Be prepared to carry out basic fountain pen maintenance and cleaning more frequently.

  • Fullhalter on 13/04/2026 - 07:48

    Barely use my platinum carbon for fear of staining. This one's fuzzier and cost twice? Hmmm

    • airtime on 13/04/2026 - 08:13

      Staining? Your pens or something else? If you maintain your pens well there shouldn't be any stains. Perhaps don't use it with your favourite clear demonstrator.

      Not sure what you mean by fuzzier. Do you mean its more likely to feather on different papers? It will be fine on good paper. Like most pigment based inks, it will look crap on cheap paper.

      • Fullhalter on 13/04/2026 - 09:41
        +2

        My pens, of course :)

        I mostly focus on vintage pens, and a lot of them are celluloid. Some inks can stain the barrel over time, some alkaline inks even eat away at the cellulose, while others can damage ink sacs or corrode non gold nibs and trims. So I tend to be pretty careful with that kind of thing.

        Ive also got way too many inks, so its impossible to keep proper track of everything. Thats why I usually reserve the riskier ones pigment inks, bulletproofs, reds, funky colours, iron galls, etc for converter pens or easy to replace demonstrators. I actually keep a TWSBI Eco just for that.

        Paper wise, I use everything from cheap copy paper to leather bound Tomoe River, so Id expect a decent ink to handle at least that range

        • airtime on 13/04/2026 - 09:58
          +1

          Ah. I don't have much experience with vintage pens. But yes, I'd keep the pigmented inks away from them. I always throw new inks into easily replaceable pens first, Eco's, Safari's, etc.

          Cheap copy paper is going to be cheap copy paper no matter what. I'd never expect inks to behave on stock like that. Feathers, ghosts, bleeds, its horrible and never allows for good shading or shimmer (if you are into that). Even what is now called Tomoe River paper is a bit of a shadow of what it once was. Midori MD paper is my goto for great performance/price ratio. Emshoi notebooks from Amazon are good if you are looking for low cost but good performing paper.

        • Whiplash on 14/04/2026 - 18:48

          baystate blue enters the chat.

  • whyisave on 13/04/2026 - 08:13
    +1

    I'm liking all the comments from OzB, who still value a good pen + ink, for their penmanship.

    I still have a fountain pen and ink, somewhere.

    • ThadtheChad on 13/04/2026 - 09:36
      +1

      It really warms the cockles of my heart to see this ngl.

    • airtime on 13/04/2026 - 09:50
      +1

      There is something very relaxing and rewarding when sitting down with a beautiful pen and quality paper. Just taking the time to record your thoughts for prosperity. Then also getting the writing looking nice, uniform, well-formed… ahh, simple analogue pleasures. Quiet time to practice a little penmanship is well spent.

  • cannedhams on 13/04/2026 - 10:22
    -2

    I really question whether anyone would be able to easily tell the difference bw this and a $10 bottle of quink. Black is black.

    • ThadtheChad on 13/04/2026 - 11:26
      +3

      There is a saying that roughly translates to "a pig that spends his life eating <fecal matter> will never be able to appreciate the joys of truffle".

      If you've not used any of the relatively nicer inks in a good fountain pen, on high quality paper, this would seem like a pointless comparison.

      I know I'm dunking on the quink pretty hard, but it's actually perfectly serviceable.
      It is also completely shithouse when it comes to some of my nicer inks from Pelikan or Iroshizuku (Pilot) or Sailor inks. I'd buy this in a heartbeat if I didn't already have a ton of ink at home.

      • cannedhams on 13/04/2026 - 14:31
        -1

        I wouldnt risk putting this in a decent pen. I wouldn't risk putting Quink in a decent pen truth be told, it leans acidic. I'm not stanning for Quink here.

        The OP is talking about putting this in a Platinum Preppy, fair enough, but its like mixing Cristal champagne with coke. The last fountain pen post was about putting Iroshizuku in a Lamy Safari or a Kakuno. I mean you're better off spending a bit more money on the pen.

        I get the $8 faber castell konigsblau ink. Its fine. I wish someone would post another Lamy Aion $30 deal. I loved that thing. Ended up gifting it when a wedding came up.

    • airtime on 13/04/2026 - 12:47
      +2

      It is actually easy to tell the difference when you compare side by side.

      It's like comparing the black of an good OLED panel to the black of a TN or poor IPS panel. If all you have seen is the TN panel, you wouldn't know any better.

      Quink black clearly looks greyish in comparison alongside Chuo Kuro on the same paper.

      Whether that matters to you or not is a personal decision. For most people, they would be happy with Quink and wouldn't know or care about a blacker ink. For people specifically interested in inks, writing or sketching, there is value in the difference.

  • yojabbajabba on 13/04/2026 - 22:51

    Buy two, save 11%.

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