More than a month ago, I put Rotten Green in a modern Pelikan with extra-fine nib and in a Lamy Safari with broad nib. Until I had to clean the pens for this review, I kept them going with occasional refills.
KWZ Rotten Green is a very dark green with very little shading. In fact, it looks fairly close to a black ink. Here is Rotten Green with a black ink, a blue ink and a blue black ink.
Rotten Green is a wet ink, and it tends to write a wider, wetter line. To bear this out, in the writing sample above, Rotten Green is in a Pelikan extra-fine, while Pelikan Brilliant Black is in a Lamy Safari fine, Visconti Blue is in a Pelikan medium stub, and J. Herbin Bleu Nuit is in a Parker 51 with a wide fine nib.
Because it’s so wet, Rotten Green takes longer to dry than average on paper like Rhodia and Tomoe River. I found its lubrication moderate to good. Its flow was flawless in the Pelikan. Rotten Green did have occasional hesitant starts in the Safari, especially as the ink level declined in the converter.
Here’s what Rotten Green looks like across an entire page of Tomoe River paper.
It’s a strong, dark color. I don’t see any sheen on Tomoe River, but there’s a bit of shading, if you look closely.
I really liked the look of Rotten Green on Rhodia, especially from the Pelikan with extra-fine nib.
Here is Rotten Green from the Lamy with broad nib on Rhodia.
Even with the broad nib, Rotten Green doesn’t have the heavy feeling that many dark, saturated inks have.
Rotten Green performed moderately well on lower-quality paper. It tended to feather, just a bit. Here is a closeup of Rotten Green on my everyday Staples Sustainable Earth legal paper, with the Lamy Safari with broad nib.
A bigger issue I had with Rotten Green on poor papers was showthrough and a bit of bleedthough. Of course this is one trade-off you make with such a wet, dark ink, but it kept me from writing on both sides of the Staples paper.
With that caveat, I liked Rotten Green on Staples Sustainable Earth. I liked the color, and it dried very quickly on the absorbent paper. Here is Rotten Green from the Pelikan with extra-fine nib on Sustainable Earth.
Rotten Green does not have any real water-resistance. It washes off smooth paper very easily, and it doesn’t survive in legible form on the copy paper that usually holds onto more of an ink.
But Rotten Green also cleans up very easily from a pen. A few flushes with water and it was gone, even after being in the two pens for more than a month.
I enjoy a dark green ink, so I had a few to compare to Rotten Green, and these are the closest.
In that group, Rotten Green is on the bluer end, and as such it looks fairly close to both KWZ Foggy Green and Sailor Jentle Miruai.
Looking at the swabs, one would think KWZ Foggy Green might be darker than Rotten Green, but if you go to the linked review, you’ll see that Foggy Green is the lighter color. They both are wet inks, writing a wider line. Foggy Green seemed more lubricated-feeling.
Sailor Miruai seems so close to Rotten Green that I put my sample of Miruai into another Lamy with broad nib, to really compare the two inks. Here is a writing sample with Rotten Green writing the first line in each pair and Miruai the second.
I find these two very close in color. Miruai may shade a bit more, and it looks a tiny bit lighter and possibly a touch more blue or gray. Unlike Rotten Green, Miruai will sheen. In a pen, Miruai is more lubricated-feeling, but they are both wet inks and give a similar line.
Here is paper towel chromatography of KWZ Rotten Green.
That’s an interesting mixture. I mentioned above that Rotten Green felt a little less heavy to me than many other dark and saturated inks. I wonder if something of the brightness of those dyes comes through.
Now here is KWZ Foggy Green on the left and Rotten Green on the right.
Here is KWZ Rotten Green on the left and Sailor Jentle Miruai on the right.
So, not very similar on the dye level. Comparing the two, it makes sense that the Sailor ink would have a slightly more gray or slate blue undertone. But I enjoy seeing how two such dissimilar mixes can create very similar ink colors.
KWZ Ink is available online from at least one US store and also directly from KWZ in Poland.