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Author: Martin

A very beutiful fountain pen

  • Review Add on: 21-04-2026
  • Average Rating: (5)

The Opus 88 demonstrator is a very good quality fountain pen. It’s a pleasure to draw with. It glides smoothly, and it feels great in the hand. It has a very large ink capacity. I’m very happy with my purchase, which arrived very quickly.

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  • Design :
    (5)
  • Price / Quality :
    (5)
  • Overall rating :
    (5)
Verified

Author: Francisco Javier Cercas Rueda

  • Review Add on: 05-03-2026
  • Average Rating: (4)

La pluma es grande y de aspecto sólido, bien terminada. Especialmente atractivos los finales transparentes del capuchón y la base del barril. Sistema de llenado gota a gota especialmente atractivo para los amantes de las plumas. Alberga GRAN capacidad de tinta. a versión demo blanca permite ver el color y la cantidad de tinta que quedan. La sección es muy agradable para cogerla. El plumín 1.5 es demasiado grande para mi de trazo ypido aparte el 1.1.

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  • Design :
    (4)
  • Price / Quality :
    (5)
  • Overall rating :
    (4)
Verified

Author: Juan Fco Trujillo C

Bien - Nice

  • Review Add on: 26-12-2025
  • Average Rating: (5)

La compré hace tiempo y lamentablemente se cayó de mi altura (1.80m), lamentablemente se rompió y por ello estoy aquí, la quiero de nuevo, probaré con el nib flex fine, estoy super emocionado, les cuento qué tal más adelante.
Best regards.

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  • Design :
    (5)
  • Price / Quality :
    (5)
  • Overall rating :
    (5)

Author: Kwafo

Great looks and ink storage

  • Review Add on: 14-11-2025
  • Average Rating: (3)

Love the pen en the look, I removed the clip which makes it perfect for me. Love that you can see the ink capacity and the ability to close the feeder off from the ink reserve. o\

But one thing that is bugging me is that it has hard starts, this makes the pen not nice to write wit. I have the EF nib. I will let someone look into it. So, 5 stars for design, but the quality for me is not good.

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  • Design :
    (5)
  • Price / Quality :
    (2)
  • Overall rating :
    (3)

Author: TJ

Used for sketching

  • Review Add on: 02-04-2025
  • Average Rating: (5)

Great pen. I use it primarily with Iroshizuku grey ink. Puts down a very soft line and can be quite dry if used gently. I use it alongside my 743 FA and 812 F. It works really well in landscapes. Highly recommended for soft art uses.

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  • Design :
    (5)
  • Price / Quality :
    (5)
  • Overall rating :
    (5)

Author: Michael

Opus 88 clear demonstrator

  • Review Add on: 22-07-2024
  • Average Rating: (5)

Top quality pen, huge ink capacity, excellent nib. Superb customer service AAA+++

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    (5)
  • Price / Quality :
    (5)
  • Overall rating :
    (5)

Author: Pascal

Clear Choice

  • Review Add on: 07-07-2024
  • Average Rating: (4)

The OPUS 88 Demonstrator is a beautiful combination of style and functionality. This pen has a transparent acrylic body, allowing you to see how much ink is left. It's a pen you’ll not only enjoy using but also be proud to show off.

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  • Design :
    (4)
  • Price / Quality :
    (5)
  • Overall rating :
    (4)
Verified

Author: Annette

What a great pen ...

  • Review Add on: 16-06-2024
  • Average Rating: (5)

The OPUS 88 Demonstrator is really great! It’s my first pen with a Jowo #6 Nib and I really enjoy the smooth writing. I got it with a fine nib (f) and that’s the perfect match with Tomoe River Paper 52 gsm, which I mainly use. The eyedropper filling system allows a lot of ink and the filling goes very easy. I love to watch the ink (currently I have inked the Opus 88 Demo with Diamine „Aurora Borealis“) flowing in the pen. The ink flow is very constantly and not too juicy. It’s a very comfort writing, although it’s an oversized pen. The only thing to notice: this pen is barely nothing for on the go (for me), but it’s perfect on the desk at home or in the garden.

The packaging from Appelboom was very nice and secure and the shipment from the Netherlands to Germany was very fast. So a great and warm thankyou for this lovely pen!

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  • Design :
    (5)
  • Price / Quality :
    (5)
  • Overall rating :
    (5)
Verified

Author: JanN

Great writing instrument!

  • Review Add on: 03-04-2024
  • Average Rating: (5)

The Opus 88 Koloro Demo in Transparent is an excellent writing instrument! Its ink capacity and the shut-off valve make it a reliable companion for trips. The writing experience is superb, offering a highly beneficial quality-to-price ratio. I enjoy using it on a daily basis and appreciate the clear, almost ascetic aesthetics of this pen. It is not only practical for seeing the ink level but also provides a sense of honesty and transparency. BTW, Appelboom does a great job; I received my package on the other side of the continent within 3 days of placing the order (they dispatched it within hours of order placement). The package was thoroughly protected.
The best testament to my satisfaction is that I have already ordered a second piece of the same pen :)

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  • Design :
    (5)
  • Price / Quality :
    (5)
  • Overall rating :
    (5)

Author: Anubhav

  • Review Add on: 23-11-2023
  • Average Rating: (5)

What a pen. Must buy if you like oversized, transparent , excellent buttery smooth nib and great flow.

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