This is a fabulous black ink cartridge to use with the Lamy ex-fine nib Safari.
The black ink was deep and saturated. It writes smoothly and dries fast. FYI,
the black hue appeared darker when the cartridge was paired with a ex- fine nib.
When used with a fine nib, the deep black color seemed more blue-black or
Writing with a Lamy Safari, EF nib. The color is solid black, the EF nib doesn't
show any deficiencies in flow or color quality. Writes smoothly and dries about
as fast as any other ink I've used. While I've moved to using green ink in a
converted, I have a few of these cartridges in my pen case if the situation
arises where I need a refill on the go.