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The ink turns darker...
December 27, 2013
Verified Purchase
The ink turns darker with increased use, so don't despair if the color looks too light initially. Appears more like a dark blue than dark gray ( like the lamy blue-black cartridge). The shade is darker with the fine point nibs. Easy on the eyes against yellowish tinged paper.

7 people found this helpful
I use the pilot fountain...
July 29, 2013
Verified Purchase
I use the pilot fountain pen for taking notes and at first i found the ink to be too light. But then upon extended use, the ink turns darker--i dunno if it's the pen or the ink, but it is great! I like this better than the black.
3 people found this helpful
Not really what I'd call...
June 12, 2013
Verified Purchase
Not really what I'd call blue-black, more like a weak bluey-grey. I was hoping for a much bolder colour, similar to the Pilot/Namiki black with a little blue shading. Unfortunately, I couldn't find a decent review for this specific shade prior to trying it.

The ink seems to transfer itself to the paper in all the right ways, with no particular penchant for feathering, bleed through, drying out or any other bad habits. Maybe it helps to only be used with Pilot nibs, an obvious benefit of proprietary cartridges.

However, I won't be buying these again as I'm just not a fan of the colour. Fortunately I've a number of Pilot pens around the house, so maybe I can get someone else to use the rest of these cartridges...
3 people found this helpful
Minimal price for 12...
November 24, 2014
Verified Purchase
Minimal price for 12 Ink Cartridges. I purchased these for the Ink Cartridge (so I could refill with a Syringe of the ink of my choice).
1 person found this helpful
Good tone after a sentence...
November 18, 2014
Verified Purchase
Good tone after a sentence or two is written. This works very well in the Pilot Metropolitan with Fine nib and the Pilot Penmanship pen with the Extra Fine nib. I had used Lamy Blue-Black, but found its thicker viscosity tended to gum up the nibs.

Soon I'll be getting a Pilot Original Cuson in XF and my guess is that it'll be the one that won't block up the nib.
1 person found this helpful
Pilot's color palette...
May 25, 2016
Verified Purchase
Pilot's color palette is fairly narrow with respect to ink cartridges. However, this basic blue is one of the absolute best, and I have bottles of this stuff as my go-to blue ink for non-Pilot fountain pens, too. The design of the cartridge opening--which is much wider than international cartridges--allows for ample ink-flow. The colour is a true-blue. There is no purple tone, or green; the ink isn't "royal blue" or "teal." It is just...blue! This is what basic blue ink should look like. It flows great in every pen I have tried. In fact, if you have a pen that seems to write a little on the dry side, I recommend giving this ink a try. The ink does not seem overly prone to feather or bleed-through, and is even relatively waterproof (although, it is not advertised as such, and should not be considered archival).

Some people claim the ink tends to change colour over time, but I have not noticed this. I have noticed that Pilot ink cartridges--like all ink cartridges--will slowly allow the water component of the mixture to escape and evaporate over time. As the water evaporates, the concentration of dye content in the remaining ink cartridge increases, which makes it darker. Still, it's perfectly safe to use.
I just became a fountain...
May 21, 2016
Verified Purchase
I just became a fountain pen fan, and purchased cartridges on a whim. I did read the other reviews (after I ordered) about the ink "writing blue...but turning darker eventually". I call bullocks on that. The ink is called blue black, not *wait-for-a-while-then-blue-will-maybe-get-darker*. The cartridges are on the cheaper side, but if you're extremely particular about colors, these cartridges might irritate! I will keep using this ink, or give some cartridges away just to get rid of it, but I won't purchase again. I purchased Diamine's 1864 Blue Black ink, and it's absolutely gorgeous. It writes very dark; you can see a tint of blue, AND black. Using the Pilot cartridges are definitely convenient, but one is TRULY settling for less if buying the Pilot in hopes of a blue black. Just call it blue and carry on. As someone who LOVES convenience, I will still use the converters to fill my pen with Diamine 1864 Blue Black ink.
I don't much to compare...
April 11, 2016
Verified Purchase
I don't much to compare it to as I am just beginning, but it does the job well
Convenient, easy to pop...
April 6, 2016
Verified Purchase
Convenient, easy to pop in, and a delightfully consistent blue-black ink that doesn't spread, web out, or bleed thru quality papers, Dries quickly, especially with fine nibs. Highly recpmmended for its portability in writing kits, ease of use, no mess, and reliability.
Great color, flows n...
March 10, 2016
Verified Purchase
Great color, flows nicely.
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