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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.
5 people found this helpful
wendi.berry
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.
4 people found this helpful
jcfree4526
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.
2 people found this helpful
Yoyochanny
I like the convenience...
May 4, 2016
Verified Purchase
I like the convenience of cartridges. The blue is okay, but it's not great--I don't love the color. I do like that it stands up to coffee spills and is a good consistency. Just wish Pilot would put a few of their bottled inks into cartridge form because the other blues are much, much prettier.
1 person found this helpful
I have used black ink...
January 6, 2016
Verified Purchase
I have used black ink most of my adult life but buying the new fountain pen I decided to use blue ink. (It's the color I used when I was younger) I am glad I did. It is a nice change from black. I have convinced my grandson to try a fountain pen. Great purchase.
1 person found this helpful
caroleward1738
nice rich blue color...
July 21, 2015
Verified Purchase
nice rich blue color
1 person found this helpful
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!
1 person found this helpful
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.
1 person found this helpful
aquaria40
I've been using these...
March 11, 2015
Verified Purchase
I've been using these cartridges for many years. It was great to use a "fountain" pen again after all the "biro's" (first ball point). The cartridges have always done an excellent job. The blue ink is the same as the old fountain pen ink. I am now going to tryout the black ink.
1 person found this helpful
trevenenj
These cartridges are...
February 24, 2015
Verified Purchase
These cartridges are true to color and don't bleed through.
1 person found this helpful
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