I picked up a bottle of the reformulated Midnight Blue yesterday, below are some photos and some first thoughts.
Background: The old formula Midnight Blue has been a much loved 'iron gall' ink, an ink which contains a component that seems to result in fantastic performance, very little bleed and feathering, lots of shading and a degree of water resistance. As the ink reacts with the air it darkens to quite a deep blue black. The problem with iron gall inks is thier reactivity, which can increase corrosion of reactive metals such as steel (i.e. steel nibs), and can cause problems if they dry out in pens. Modern IG inks contain very low concentrations. As a result the cartridge versions (maybe they assume those who exclusively use cartridges are not going to wash out their pens as thoroughly?) of IG inks are often non-IG equivalents. MB is now following Lamy in replacing the bottled IG inks with a non-IG equivalent. I am not sure if this new ink is identical to the cartridge Midnight Blue, or something new entirely.
First, identifying the new ink from the old is quite easy. The boxes are different on one side (the new one does not make any claims about permanency), and the ident numbers on the bottom are different.
The new ink seems to be slightly less water resistant than the previous version, although not by much.
The new ink is a pleasing enough colour and performance is not bad, but it's not the same as the old formula ink. Performance of the new ink seems to be on a par with some of the other MB offerings like Royal Blue. I'll miss the old formula, and when I run out I'll look for another IG replacement.
Edited by Bigeddie, 06 October 2013 - 14:20.