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Quick answer
The Goulet 5 ml Ink Syringes set holds two 5 ml plastic syringes and two 20 gauge needles. Goulet sells it for refilling used ink cartridges from a bottle, getting the last drops out of an ink bottle and moving ink between containers. It is one of Goulet's most-reviewed accessories, with 755 reviews in October 2026.
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Goulet publishes no length, so the syringes are drawn in proportion.
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Notes on these facts
Made by Goulet Pens (The Goulet Pen Company), near Richmond, Virginia. Country of manufacture not stated: Goulet's product page lists the contents but not where the syringes and needles are made. Source. Price: example listing.
Price bands are typical US retail, checked October 2026.
Key takeaways
The set holds 2 syringes of 5 ml each and 2 needles of 20 gauge, per Goulet.
One 5 ml syringe holds several cartridges' worth: Goulet measures a TWSBI SWIPE cartridge at 1.46 ml.
Goulet lists 3 uses: refilling old cartridges, emptying the last ink from a bottle and transferring ink.
The set had 755 reviews on Goulet's site on October 22, 2026, 93% of them five stars.
It sits in our $$ band, $5–20 for the set.
What are Goulet ink syringes for?
Moving ink: refilling empty cartridges from a bottle, getting the last drops out of a bottle and transferring ink between containers. Those are the three uses Goulet lists.
The point is choice. A cartridge pen can then use any bottled ink without a converter, and cartridges usually hold more than converters. Goulet’s set had 755 reviews on its site on October 22, 2026, which makes it one of its most-reviewed accessories.
Goulet ink syringe set specs
Spec
Value
Seller
Goulet Pens, near Richmond, Virginia (US)
Contents
2 syringes, 2 needles
Syringe size
5 ml each, with ml markings
Needle
20 gauge (Goulet)
SKU / UPC
GP-10002 / 658294305068
Price band
$$ ($5–20 for the set)
Goulet doesn’t publish lengths, so our drawing is in proportion. By the standard gauge table a 20 gauge needle is about 0.9 mm across, thin enough to slide into a cartridge mouth.
How do you refill a cartridge with a syringe?
Draw up ink, inject it into the empty cartridge, and seal it in the pen.
Fill slowly so air can escape around the needle.
Draw ink from the bottle until the syringe holds a little more than one cartridge.
Hold the empty cartridge upright, slide the needle to the bottom and fill slowly, lifting as it fills.
Stop just below the top, cover the mouth with a fingertip, wipe it and push it into the pen.
Rinse the syringe with water before switching colors. Our how to fill a fountain pen guide compares this with converters and piston fillers.
How many cartridges does one syringe fill?
About three standard international cartridges per 5 ml syringe. Goulet measures 1.46 ml in a TWSBI SWIPE cartridge; that’s the size to plan with.
Fill
Capacity
From one 5 ml syringe
TWSBI SWIPE cartridge
1.46 ml (Goulet)
About 3
Pilot CON-40 converter
0.4 ml (Pilot)
About 12
LAMY Z28 converter
About 0.8 ml (Goulet)
About 6
That’s why refilled cartridges are a common fix for small converters such as the Pilot CON-40.
Why refill cartridges instead of using a converter?
More ink per fill, and the freedom to use any bottled ink in a cartridge-only pen. A converter usually holds less than the cartridge it replaces: Pilot rates its CON-40 at 0.4 ml, while Goulet measures a TWSBI SWIPE cartridge at 1.46 ml.
Some pens take no converter at all, or only a tiny one. The Kaweco Liliput, for example, takes short cartridges and only Kaweco’s mini converter, so refilling cartridges is the easy way to use bottled ink in it.
Refilled cartridges also travel well: fill two or three at home, cap them, and carry them instead of a bottle.
Can you clean pens with ink syringes?
Yes: push clean water through a cartridge pen’s section to flush the feed. Fit an empty cartridge or converter, or push water through the back of the section, and cycle until it runs clear.
For dried ink, pair it with Goulet Pen Flush, which Goulet suggests using in about 4 ml doses.
Are the needles safe?
Goulet sells them for ink, not medicine, but treat any needle with care. Goulet doesn’t say whether the tips are blunt. A reviewer on its page says they work without sticking you, and another notes the printed markings wear off quickly.
Keep the set away from children, and cap or store the needles after use.
A syringe is also a tidy way to fill an eyedropper pen such as the Opus 88 Jazz.
Where are Goulet ink syringes made?
Goulet doesn’t say. Goulet Pens is a US retailer near Richmond, Virginia, and sells the set under its own name, but its product page doesn’t state where the syringes or needles are made.
Frequently asked questions
What comes in the Goulet ink syringe set?
Two 5 ml syringes and two 20 gauge needles, according to Goulet.
How do you refill an ink cartridge with a syringe?
Draw ink from the bottle into the syringe, slide the needle into the empty cartridge and fill it slowly to just below the top, then wipe it and push it into the pen.
Are the Goulet syringe needles sharp?
Goulet sells them for ink, and a reviewer on its page says they do the job without sticking you. Handle any needle carefully and keep the set away from children.
Can you clean a fountain pen with a syringe?
Yes: pushing water through a cartridge pen's section with a syringe flushes the feed faster than dipping. Some kits use a bulb syringe instead, which Goulet also mentions in its Pen Flush reviews.
How much ink fits in a fountain pen cartridge?
It depends on the pen and cartridge. Goulet measures 1.46 ml for a TWSBI SWIPE cartridge and 1.68 ml for a Kaweco Perkeo with a spare cartridge piggybacked, so one 5 ml syringe fills about three.
Can you reuse ink syringes?
Yes. Rinse the syringe and needle with water by drawing it in and pushing it out a few times before switching inks.
