Opus 88 Demonstrator Fountain Pen - Clear

Opus 88 Demonstrator Fountain Pen - Clear

$120.00

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on saleOpus 88 Demonstrator Fountain Pen - Clear

Product Code OP-96083900EF

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Opus 88 Demonstrator Fountain Pen - Clear
Opus 88 Demonstrator Fountain Pen - Clear Opus 88 Demonstrator Fountain Pen - Clear Opus 88 Demonstrator Fountain Pen - Clear Opus 88 Demonstrator Fountain Pen - Clear Opus 88 Demonstrator Fountain Pen - Clear Opus 88 Demonstrator Fountain Pen - Clear Opus 88 Demonstrator Fountain Pen - Clear Opus 88 Demonstrator Fountain Pen - Clear Opus 88 Demonstrator Fountain Pen - Clear Opus 88 Demonstrator Fountain Pen - Clear Opus 88 Demonstrator Fountain Pen - Clear Opus 88 Demonstrator Fountain Pen - Clear

on saleOpus 88 Demonstrator Fountain Pen - Clear

Product Code OP-96083900EF

In Stock

out of stock

Shop All Opus 88
$120.00
Color:
Clear
Blue Whale Clear
Nib Guide

Not sure which size nib is best for you?

Try our Nib Nook tool to view and compare nib widths using our writing samples. Learn more ›

The Opus 88 Demonstrator fountain pen is a truly unique writing instrument. This large non-postable pen is an eyedropper-filled pen with a piston operated shut-off valve. Featuring a sharp alternating material scheme of frosted and clear resin, this pen’s design stands on its own. It has a sleek black clip and a silver stainless steel #6 JoWo nib and includes a glass eyedropper to fill the pen with your favorite ink.

Note: JoWo is transitioning their nib designs from the old scroll pattern to a more simple design. Stock is currently mixed; what you receive may not necessarily match what is photographed.

An ebonite piston and rubber gasket seals the feed off from the barrel when fully depressed, reducing the risk of leakage and burping. By unscrewing the blind cap and loosening the rod at the rear of the barrel, you open up the ink flow to the feed. During long writing sessions, leave the shut-off valve open to take advantage of the impressive ink capacity. Having a completely clear pen body allows you to see both your current ink level and your nib while capped.

Condition
New
Brand
Opus 88
Type
Fountain Pens
Color
Clear
Demonstrator

Whether or not the barrel of the pen is translucent, allowing you to see the ink and filling mechanism inside.
Yes
Body Material
Resin
Cap Rotations

For pens with a screw-cap closure, how many rotations it takes to uncap/recap the pen.
4
Cap Type

How the cap is opened/closed from the barrel of the pen. Some common options include Snap-Cap, Screw-Cap, Magnetic Cap, or Capless (no cap).
Screw-cap
Compatible inks & refills

Which ink this pen will accept. Choices include bottled ink and various styles of pre-filled ink cartridges.
Bottled ink
Filling Mechanism

How the pen fills with ink. Click here to watch our video tutorial on common filling mechanisms.
Eyedropper
Grip Material
Resin
Nib Size
Extra-Fine, Fine, Medium, Broad, 1.5mm Stub
Nib Color
Silver
Nib Material
Steel
Postable

Whether or not the cap fits securely onto the back of the barrel when open.
No
Retractable

Whether or not the nib/tip can retract into the body of the pen (usually for click or twist-open style pens).
No
Diameter - Body
14.9mm (0.59in)
Diameter - Cap (without clip)
16.5mm (0.65in)
Diameter - Cap (with clip)
21mm (0.83in)
Diameter - Grip (mm)

Measured from the place most people choose to rest their fingers, which varies with each pen.
11.0mm
Length - Body

The measurement from the back end of the barrel to the tip of the nib.
136.5mm (5.37in)
Length - Cap
63.6mm (2.50in)
Length - Nib

The measured length of the visible portion of the nib when it is installed in the pen, from grip to tip.
23mm (0.91in)
Length - Overall (Closed)
147.6mm (5.81in)
Weight - Body

If a converter is included with the pen, this weight is reflected in the total.
17g (0.60oz)
Weight - Cap
10g (0.35oz)
Weight - Overall (g)
27.0g
Max Ink Capacity - Eyedropper

The maximum volume of ink that can fit in the pen when filling the entire barrel of the pen via eyedropper.
3.56ml

Customer Reviews

Based on 93 reviews
86%
(80)
9%
(8)
3%
(3)
1%
(1)
1%
(1)
J
Joshua L.
Great pen. Amazing ink capacity, easy to disassemble and clean.

This is a great pen for the cost. The nib writes well and being an easily replaceable nib provides peace of mind. The pen is also very easily disassembled and easily cleaned. There are no lubricated parts like in a vacuum filler or piston filler so you don't need to worry about that either. The filling method is a touch tedious, but I think the average fountain pen enthusiast would agree that it's all a part of the experience.

My one single complaint would be that the pens cap does not post on the end of the pen. I was aware of this before purchasing, but others had mentioned the pens size and weight makes it comfortable even without the added weight of the cap. I can confirm this is true.

Overall a very strong workhorse of a pen, a great daily driver, easily cleaned, large capacity. If you're considering this pen and don't mind a cap that cannot be posted, then go for it!

S
Syed J.
Excellent pen

It has all the things I was looking for. Eyedropper pen, large ink capacity, good nib. Service was excellent.

J
Jay H.
Great Pen

I picked up the Opus 88 Demonstrator (EF) after watching a Goulet YT video on it. What sold me on the pen was the massive reservoir and an interest in trying out an eye dropper style pen. The pen took a little bit of work to prime, but it has become my daily driver for journaling, paired with Pilot Yama-budo ink. From trying a few inks with the pen, it seems to prefer inks that are a littler higher in flow rate than other inks like Noodlers.

G
Geoffrey S.
Great pen for sketching

Yes the cap takes a lot of turns to get off; and it isn't postable. But you wouldn't want to post it as it would become top heavy and awkwardly long. Uncapped, it's the perfect length, and while it's a wide pen, it remains nimble and feels great in hand. It holds a tremendous amount of ink, avoids the pain of cartridges, and the nib is ultra smooth at least in my EF version. I can get just enough line variation to put down bold (pressure), medium (regular pressure) or thin (reverse nib). I really like the resin feel of the body, and that the body is transparent and all-the-same-width with a chunky, clear "twister" on the end. The overall look and feel is minimalist and high quality. Hope to use this in sketches for years.

J
John H.V.
First Opus 88

I have been eyeing this pen for some time. Finally pulled the trigger and love it! Just wish it came with a black nib instead of the silver. That little extra touch would put it over the top!

123

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Frequently Asked Questions

How do I fill a fountain pen with ink? 8EDA1617-F73A-4DAF-8245-6D2BF4ABEB7B

It depends on the pen's filling mechanism, which you can find in the Technical Specs section above. 

Here's a quick definition of the most common filling mechanisms:

  • Cartridge - A small, disposable, sealed plastic reservoir that holds fountain pen ink. These come pre-filled with ink, and typically you just push to insert them into place and you'll be ready to write! Check out our quick guide here.
  • Converter - A detachable and refillable ink reservoir that allows you to use bottled ink in a cartridge-accepting pen. Typically you will install the converter into the grip section, dip the nib/feed into the ink, and twist or pull the converter knob to draw ink into the converter. Here's a video for how to fill a cartridge/converter pen using a LAMY pen as an example.
  • Eyedropper - A pen that utilizes the entire barrel as a reservoir for ink. Ink is directly filled into the barrel, allowing for a high ink capacity. Here's a video on how to do it!
  • Piston - A type of filling system that uses a retracting plunger inside a sealed tube to draw ink into a pen. They are typically either twist or push-operated. These pens cannot accept cartridges or a converter, and only fill from bottled ink.
  • Vacuum - A push-style piston that uses pressure to fill the large pen body with ink. They seal the ink chamber when closed, making it ideal for flying without risk of leaking. Check out our video on how to use a vac filler here.

Check out more info on these filling mechanisms including a video on how to fill each one on our blog.

How do I clean this fountain pen? 8EDA1617-F73A-4DAF-8245-6D2BF4ABEB7B

It mostly comes down to flushing out the pen with water, and sometimes a little bit of pen flush if the ink is really stuck. 

We put together a video demonstrating how to clean your eyedropper pen here:

We recommend a good cleaning every 2 weeks, and any time you change ink colors. Water will usually do the trick, but we recommend you use our Goulet Pen Flush if the ink has been left in the pen for a while and could have dried up, or when you’re switching ink colors.

For even more information about fountain pen cleaning, check out our Fountain Pen 101 video blog post.

What's your return policy? 8EDA1617-F73A-4DAF-8245-6D2BF4ABEB7B

We accept returns for up to 30 days from purchase. You can read all our Return Policies here.

To initiate a return, please submit a request at the Return Portal. Our Customer Care team might reach out to you for more information.