PILOTNamiki IC100 Fountain Pen Ink Cartridges, Black, 12-Pack (69100)

The ink is sealed in their plastic cartridges & quite well. Having owned the same few boxes of these for years, not a single one dried up. They puncture easily where they are supposed to when in use. And are in otherwise durable plastic cartridges that have not gotten damaged nor leaked for us. The ink contained inside is of perfect consistency & pours properly. Having chosen black, it appears as it should. Can confidently recommend this product to you should you need to refill your pens.

Nice box of fountain pen ink cartridges for Pilot pens. Fit mine and worked great

I bought a pack of 12 Namiki fountain pen ink cartridges, and I am very satisfied with my purchase. To begin with, I appreciate that the product came in a well-labeled package with clear instructions on how to install the cartridge into the pen. The ink itself is a deep and rich solid black which stands out boldly on the piece of paper. I would recommend using the ink on thick writing paper as it does bleed through on thinner pieces of paper. Otherwise, the ink flows smoothly and I did not have any problems with ink splatters or clumping at the tip of the pen. The Namiki fountain pen ink perfectly meets my writing and journal needs, and I am happy to have it as a companion.

these are for my pens for correspondence.

I like this product, because it is easy to change out and not messy and useful for when you are on the go. The ink doesn't come with any instructions, so if you are new to these cartridges you will unscrew the neck from the pen barrel of your fountain pen, firmly insert your cartridge by putting it in straight without turning or twisting (the larger end with the valve cover is what will be pointing down), and you should feel or hear a click when the cartridge is fully inserted. You can give the cartridge 2-3 squeezes and the ink should start flowing through your pen with ease. If it doesn't, then there may be an issue with your pen nib, or you haven't given enough time for the ink to flow (but it shouldn't take very long). One thing to take into consideration when using the cartridges is that you will go through them quickly (nib size could affect this too), especially if you write a lot with your pen. I use these cartridges with my Pilot metropolitan (fine nib) to write case notes with and went through a cartridge in 11 days. So you will go through the pack rather quick and they won't last say as long as having a bottled ink, but again, they are convenient if you are on the go.

Quality ink. Quick shipping.

I bought these for my Pilot Cocoon, and my daughter's Pilot Metropolitan pens. I didn't buy them for the ink, I bought them to store different colors to test in our pens.My daughter and I love our Pilot Metropolitans and Pilot Cocoons (basically a Japanese market Metropolitan). The smaller size, though, means that ink capacity is limited. This is especially true if you like to use an ink fill converter such as a piston operated or squeeze type.The best way to get maximum capacity from the smaller pen is to use ink cartridges. The beauty of this is that cartridges can be reused by rinsing them out and refilling them with a syringe. The cartridges can even be filled and stored for later use. The way to do this is to squeeze the cartridge allowing the little round "cap" to fall out, and then re-seating the cap after refilling the cartridge. There are good demonstrations of this online if you google "reusing fountain pen ink cartridges" or the like.Anyway, if you want maximum capacity out of your smaller metropolitan or cocoon, cartridges are the way to go - inexpensive and ultra versatile.

The cartridge holds about as much ink as the Pilot CON-20 which is a cartridge-converter, but without the hassle of buying an inkwell. The ink is great, I'm using it for just regular junk paper for school. The downside to it is it only fits Pilot/Namiki Pens that use cartridges, and as an example, I'm using them in my Pilot Metropolitan (which is an amazing pen for the price by the way!) and they work really well, no leaking or anything. You can take a blunt syringe and refill it with ink and they hold about .9 millimeters of ink. For those who need the math, an Iroshizuku bottle holds 50 millimeters, so that's 4.16 of these boxes, and my 12 pack costs me $5.90 USD, so for a bottle of Take-Sumi black for $30 USD you can get the equivalent in cartridges for $24.58 (ish) USD, if the 12 packs cost the same. Of course, the Iroshizuku has qualities that the Namiki doesn't, you should get a bottle, but for my paperwork and i really need ease-of-use, these are a good choice for your Pilot/Namiki pens.