Very fast Drying, high density pigment
This ink is my fastest drying and most dense black ink comparable to Rapidograph Ultradraw 3085F.BLA ("india Ink"). I usually use a purple mixture of 20% Noodlers dark blue ink, Kung Te-Cheng with 80% Socrates red-violet for line sketching. Lotte is denser. I suggest mild shaking all R&K sketch inks before inking and while in the pen before writing. The nano-pigments do not stay fully in suspension. I am currently testing UV fading (Sun light) and water resistance. So far Lotte has passed both tests. Plus, there is no pen clogging so far in Lamy Safari M, B, 1.1, 1.5 and 1.9 mm, but this test is in progress.