Out of the black inks I own its by far the best, it isn't super wet and it is very easy to write with. It didn't work well with my Platinum PTL-5000a, it didn't write well at all and it seemed like the flow was terrible. I use it on my Pelikan M600 and its great.

Smooth as silk! I have used it in three different pens and they have all yielded the same fantastic results that one should expect from any Pelikan product.

Excellent service and fast shipping.

After searching a lot, I chose Edelstein Onix as my favorite black ink. I did not regret.

i needed an ink to not run when colored in with my markers. This one is a great color and runs very little.

Nice Black, Black ink not a grey tone black and drys quickly, have been using it in my Monteverde Invincia Stealth pen and flows nicely.

Filled my Delta Scrigno from the sample and love the way it looks on every paper I've written on. Not as black as Heart of Darkness, but has much more shading and interest.

This is not an intense black like Noodler's Black. It's a softer black and even shows some shading. It dries quickly and doesn't really feather or bleed. The bottle, of course, is really nice. I rated it 3 stars because it is a nice black, but not special, and I don't think it's worth the extra cost as compared to other black inks.

So far I've tried three black inks, Edelstein Onyx, Noodler's Black and Lamy Black, the Edelstein is my favorite so far. It's not as dark as the Noodler's and doesn't flow as well as the Lamy but on balance it does all things well.

This ink definitely performs a lot better than some of the reviews on Edelstein series out there. It writes very smoothly. The color is saturated enough, but you can still see variance in shading. It works very well with a variety of paper I have tried on, even the normal printing paper that we have at the office.

This is my standard everyday formal ink. It is a very dark black and dries pretty quickly. That is important to me as I am a lefty.

Black, black, black. Didn't expect this from the very average Edelstein assortments. This is not average at all and a standout among black inks, if you don't mind spending for the bottle. Try Onyx, Aurora Black, and Pelikan Brilliant Black 4001. Each is very different and you might find you like Onyx the best.

I've used about half of the sample. Works well in my delta Scrigno, with nice shading and little feathering in a wet pen. I'm not sure the ink is worth the price however. I may try one of the Diamine blacks next...

I was hoping for a rich, deep black with a little shine for interest; with all the hype the Edelstein group has received, I thought this must surely be the one. It really is just a black ink however, hence the 3 stars. But I love the bottle!

This is an interesting black. What makes it interesting? I pick up a hint of yellow. In addition, it flows well, is saturated, and doesn't smell bad.