on salePlatinum Preppy Fountain Pen - Black

Product Code Plat-PSQ-400-01-1

In Stock

out of stock

on salePlatinum Preppy Fountain Pen - Black

Product Code Plat-PSQ-400-01-1

In Stock

out of stock

Nib Guide

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

Platinum Black - Ink Cartridges (2-Pack)
Add Disposable Ink Cartridges + $3.50 Platinum Black - Ink Cartridges (2-Pack)

Platinum Black - Ink Cartridges (2-Pack)

Product Code Plat-SPN-100A-1

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Platinum Cartridge Converter - Silver Trim
Add a Refillable Converter + $11.00 Platinum Cartridge Converter - Silver Trim

Platinum Cartridge Converter - Silver Trim

Product Code Plat-Converter-700A

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The Platinum Preppy fountain pen is one of the best values for the money! This is a fantastic starter fountain pen, or great for lending to a friend. This pen features a translucent black body, a clear cap, black trim, and a stainless steel nib. As a Japanese-made pen, the nib runs on the narrow side. The Preppy accepts proprietary Platinum ink cartridges (one black cartridge is included) or a Platinum converter (sold separately) to fill with bottled ink.

By converting this pen to an eyedropper, you can fill the entire barrel with ink for maximum ink capacity! All you need to do is add an o-ring and a small amount of silicone grease to the threads (available separately).

Click here to shop all compatible Platinum ink cartridges.

Fountain Pens

Whether or not the barrel of the pen is translucent, allowing you to see the ink and filling mechanism inside.

Body Material
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).

Compatible inks & refills

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

Bottled inks, Proprietary Platinum ink cartridges
Filling Mechanism

How the pen fills with ink. Click here to watch our video tutorial on common filling mechanisms.

Cartridge, Converter, Eyedropper
Grip Material
Nib Size
Extra-Fine, Fine, Medium
Nib Color
Nib Material

Whether or not the cap fits securely onto the back of the barrel when open.


Whether or not the nib/tip can retract into the body of the pen (usually for click or twist-open style pens).

Diameter - Body
12mm (0.5in)
Diameter - Cap (without clip)
13mm (0.5in)
Diameter - Cap (with clip)
17mm (0.7in)
Diameter - Grip (mm)

Measured from the place most people choose to rest their fingers, which varies with each pen.

Length - Body

The measurement from the back end of the barrel to the tip of the nib.

122mm (4.8in)
Length - Cap
59.7mm (2.3in)
Length - Nib

The measured length of the visible portion of the nib when it is installed in the pen, from grip to tip.

14.5mm (0.6in)
Length - Overall (Closed)
138mm (5.4in)
Length - Overall (Posted)

When the cap of the pen is posted onto the back of the pen body, this is the measurement of the entire pen including the nib.

154mm (6.1in)
Weight - Body

If a converter is included with the pen, this weight is reflected in the total.

9g (0.3oz)
Weight - Cap
4g (0.1oz)
Weight - Overall (g)
Max Ink Capacity - Cartridge

The maximum volume of ink that can fit in the pen when using a cartridge.

Max Ink Capacity - Converter

The maximum volume of ink that can fit in the pen when using a converter.

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.


Customer Reviews

Based on 382 reviews
Great little knockabout pen; Smoother nibs than expected

I needed a pen that wouldn't break the bank or break my heart if it rolled off the desk and broke or "grew legs" and walked away. ;-) With that in mind, I bought a Preppy with F nib and one with EF since I was unsure which I would prefer. As soon as my Preppies arrived, I popped in the cartridges and took them for test writes. I was amazed! Both nibs write smoothly, better than I thought they would, even the EF. I plan to convert both to eyedropper pens. The Fine nib will be filled with Lexington Gray for all the meeting notes I take, and I'm thinking the Extra Fine will be filled with Lamy Ruby for invoice notations. I would buy Preppy pens again without hesitation.

Great pen for the price.

Comfortable, reliable, good for sketching. The medium nib is comparable to an 0.7 mm gel pen. Some line variation for sketching. Does not dry out when not used for several days at least.


This is a excellent pen Nice ink flow easy start has not dried out on me. And the cartridge lasts a long time.


I have a couple of these economical pens , purchased specifically for the ef nibs. One I moved to one of Platinum's Plaisir to make a more durable pen. My major issue with the Preppy is the pocket clip is too fragile.

Aaron L.
Great pen, but the EF may be too dry

My only regret is getting an EF nib instead of a F or even a Medium. The pen writes great most of the time in spite of not cleaning before my first use. But I'm using nano-pigmented waterproof ink in this (R&K SketchINK) and the nib does tend to dry out in spite of the spring loaded inner cap. It doesn't completely stop and is easily revived, either by a drawing a couple of lines inward, towards my hand, or if that fails, by very lightly dipping the nib into water and trying again. I've taken to storing this pen with the nib facing down and it's helped a lot. The only problem I've had with that is that it concentrates the blue ink, making it much darker. The darkness fades if I draw with it for an extended period and the ink returns to blue as the concentrated ink is cleared from the feed.With the same order, I also got a Fine nibbed Preppy Wa Special edition and have had zero problems with that one. It's been writing great out of the gate, in spite of not using it as often as the Preppy EF and also using a nano-pigmented waterproof ink in it (De Atramentis Document Ink). Now I just wish I had gotten this black Preppy in a Medium so that I can experience that, and also to have another denser line weight available for drawing. I'm sure I'll just order another one with my next purchase because my self-control isn't great. I got the EF because I'm already used to a Platinum extra fine nib from using their Desk Pens. But that pen also tended to clog because of how I use it, which was not often enough to maintain a consistent flow. For some reason I also thought the nibs were identical but they definitely aren't! The Desk Pen nib has a gold color, which I think means it's brass or has a brass finish. The Preppy nib is steel. The Desk Pen nib is also narrower at the shoulders. I had to switch from the Desk Pen because the cap seals with only a pressure fit and I found the section was almost always dirty from ink leaking or hitting the sides of the cap when I capped it. Thanks to Brian's videos, I know how to clean the Desk Pen out thoroughly now, but I think they are just going into storage or maybe a donation. In contrast, I love how Preppy the cap seals and posts. I found cleaning it a little confusing because I thought for sure that the fins would come out, but I still managed to get them pretty clean with a long soak and blowing air through it to remove excess water. All the other parts were very easy to clean. This has absolutely been a worthwhile purchase for me, especially considering the price.

FAQs about Fountain Pens

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 a fountain pen? 8EDA1617-F73A-4DAF-8245-6D2BF4ABEB7B

It depends on the filling mechanism, but it mostly comes down to flushing it out with water, and sometimes a little bit of Pen Flush if the ink is really stuck. 

It's a bit easier to show than to tell, so we've put together a few quick videos showing you the process:

How often do I need to clean my fountain pen? 8EDA1617-F73A-4DAF-8245-6D2BF4ABEB7B

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.

My pen won’t write! What do I do? 8EDA1617-F73A-4DAF-8245-6D2BF4ABEB7B

First things first... make sure you have ink in the pen! Be sure that the ink cartridge or converter is seated properly in the pen, and that you aren't out of ink.

We always recommend you give your pen a good cleaning first, using our Goulet Pen Flush, or a drop of dish soap in some water. New pens often have some machining oil residue left in the feed, so a good cleaning often does the trick first.

If that still doesn't work, try priming the feed. This consists of either dipping your pen nib and feed in ink, or forcing ink from the converter down into the feed. 

If it’s still not working after that, please reach out to us so we can help! 

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

You can submit a return request within 30 days of your order date. 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.

Please note we are unable to accept a return of any Namiki or Sailor Bespoke fountain pen for any reason once it has been used with ink. Please thoroughly inspect and dry test the pen before use.