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These are the cartridges...
November 3, 2010
Verified Purchase
These are the cartridges you need to refill the Plumix. I got the blue-black refill cartridges and thought ink came out looking a bit too gray.

You could also flush out the empty cartridge and refill using your choice of bottled fountain pen inks (which come in a huge variety of colors) with a blunt tipped syringe (I went to the local pharmacy and asked for a syringe with the sharp removed). I have heard that you do need to keep the little purple disc in the cartridge to maintain proper ink flow.
4 people found this helpful
This is a great blue...
November 30, 2012
This is a great blue ink. Darker than Parker, Lamy, Sheaffer Skrip, with some shading if you use the right pen. Best of all, highly water resistant, almost fully waterproof.

When you think about how long these cartridges last compared to the international short cartridges, an overall great bargain.
2 people found this helpful
Got these as part of...
July 10, 2013
Verified Purchase
Got these as part of a gift for a friend. Though I have not tried the ink myself, he told me that he really enjoys using them with his Pilot Metropolitan and that the ink color and quality are very good, and behaves pretty well with regular paper.
1 person found this helpful
Very nice combo with...
November 21, 2015
Verified Purchase
Very nice combo with the Plumix, at the price point.

I use that combo black/black for everyday work. But my sixth grade daughter, also a pen fanatic (what have I done?), carries this blue in her backpack and can swap a cartridge out of her Plumix in a flash mid-class. Never a mess. Uses it on Sept Couleur pads -- take a little bit to dry, but writes so well...

Nice blue ink...
October 1, 2015
Verified Purchase
Nice blue ink
nice rich blue color...
July 21, 2015
Verified Purchase
nice rich blue color
easy to replace cartridges,...
May 26, 2015
Verified Purchase
easy to replace cartridges, and very slim, for the best fountain pen I have ever owned!
Good for regular use...
May 25, 2015
Verified Purchase
Good for regular use if you do not wish to use a convertor
My everyday ink. I write...
April 29, 2015
Verified Purchase
My everyday ink. I write so much with my fountain pen in college every day that cartridges make the most sense. Now I can bring one pen, keep a box of cartridges in my pencil case, and I'm set for any writing task I face. I love that I can bring my fountain pen with me and have refills at hand without having to bring an entire bottle of ink or several other pens with me.

The color of the ink is beautiful, too, and it flows well without looking washed out or being runny.
A fine ink, for sure....
April 22, 2015
Verified Purchase
A fine ink, for sure. Using this with a Vanishing Point fine nib, The blue is quite nice, not the best I've seen, though, However, I much prefer these to using the converter that comes with the Vanishing Point pen...they just don't hold as much ink in my opinion.
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