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Thread: Ink Review: Pilot Iroshizuku kosomosu (Cosmos)

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    FPG Donor ♕ Chrissy's Avatar
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    Default Ink Review: Pilot Iroshizuku kosumosu (Cosmos)

    Kosumosu is a light pink ink that translates to Cosmos from Japanese. It tends to lean slightly blue like “baby” pink inks, but it’s still very legible compared with some lighter pink inks. It’s exactly what you might think of when you look for a pink ink.

    Kosumosu is a well-behaved ink that flowed very nicely through my pens and felt smooth to write with even though I noticed a small amount of feedback. I didn’t notice any skips or hard starts when I put the uncapped pen down to do swab tests, dry times and water resistance. I also didn’t see any feathering on the papers I wrote on. It has nice shading but I didn’t see any sheen with normal writing.

    Available in attractive Pilot Iroshizuku 50ml glass bottles and 15ml sample bottles worldwide.

    • Start-up: Immediate.
    • Nib Dry-out: Not noticed.
    • Nib Creep / “Crud”: Not seen, even after a week in the pen.
    • Staining (pen): Not seen after several days - easy clean-up.
    • Staining (hands): It took two washes before my hands were clean.
    • Clogging: Not seen.
    • Water resistance: Not sold as waterproof but it is water resistant.


    PI kosumosu.jpg
    Last edited by Chrissy; August 29th, 2020 at 01:53 PM.
    Regards, Chrissy | My Review Blog: inkyfountainpens

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    Default Re: Ink Review: Pilot Iroshizuku kosomosu (Cosmos)

    Very nice overview. Thank you.

    Pink's a tricky ink to get dark enough to read without turning into Momiji or Tsutsuji and losing its "pinkness". It won't be the next Iro ink I purchase, but you may have sold me on it down the road. (at least in getting a sample)

    From Anderson Pens:

    Iro Pinks Reds.JPG
    Last edited by NumberSix; August 25th, 2020 at 07:35 PM.

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    Chrissy (August 25th, 2020), VerticalTwin (October 11th, 2020)

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    FPG Donor ♕ Chrissy's Avatar
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    Default Re: Ink Review: Pilot Iroshizuku kosomosu (Cosmos)

    You're welcome. I'm looking at Momiji next.....and I also have a sample of Tsutsuji for later
    Regards, Chrissy | My Review Blog: inkyfountainpens

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    Default Re: Ink Review: Pilot Iroshizuku kosomosu (Cosmos)

    Quote Originally Posted by Chrissy View Post
    I also have a sample of Tsutsuji for later
    Excellent. I look forward to the tests. That one's on my short list, maybe after Momiji and Ama-iro.

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    FPG Donor ♕ Chrissy's Avatar
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    Default Re: Ink Review: Pilot Iroshizuku kosomosu (Cosmos)

    Quote Originally Posted by NumberSix View Post
    Quote Originally Posted by Chrissy View Post
    I also have a sample of Tsutsuji for later
    Excellent. I look forward to the tests. That one's on my short list, maybe after Momiji and Ama-iro.
    I have both of those as bottles, but have used ama-iro more.
    Regards, Chrissy | My Review Blog: inkyfountainpens

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    Senior Member Yazeh's Avatar
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    Default Re: Ink Review: Pilot Iroshizuku kosomosu (Cosmos)

    Thanks for another great review. Though the ink is definitely too pink for me

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    Default Re: Ink Review: Pilot Iroshizuku kosomosu (Cosmos)

    Yama-budo is as pink as I get...so far

    Sent from my moto g power using Tapatalk

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    FPG Donor ♕ Chrissy's Avatar
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    Default Re: Ink Review: Pilot Iroshizuku kosomosu (Cosmos)

    Quote Originally Posted by TSherbs View Post
    Yama-budo is as pink as I get...so far

    Sent from my moto g power using Tapatalk
    I have that one too. That's a powerful bright fuchsia purple/pink colour.
    As winter is on it's way maybe I should be looking at syo-ro.
    Regards, Chrissy | My Review Blog: inkyfountainpens

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    Default Re: Ink Review: Pilot Iroshizuku kosumosu (Cosmos)

    I really enjoyed TsuTsuji. Momji wasn't bad either. Looking forward to those reviews.

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    Default Re: Ink Review: Pilot Iroshizuku kosomosu (Cosmos)

    Great review, thank you. Kosumosu is my Top Fave Pink ink. Perfection! (There. I said it!)
    "Nolo esse salus sine vobis ...” —St. Augustine

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