This is a short review of OS Manganese, originally manufactured under the name Manganate. There are a number of reviews of this ink under that name, so I won't belabor the review. A good basic blue-black. Both Anderson Pens and Vanness Pen Shop have this ink available at the time of writing. I'd bought my own bottle and have a backup. No affiliation with any retailer or pen/ink company.
The black marks on the page are due to printing problems. Nothing with ink.
Edited by white_lotus, 11 March 2015 - 00:02.