The European Paper Company has developed a nice blog with a variety of posts on writing with a fountain pen, writing cursively, writing professional notes, etc. A recent reminded me of a recent conversation with colleagues who were trying out different inks:
Not all inks are created equal. It’s important to note that dip pen ink is not the same as fountain pen ink. Many a fountain pen has been clogged by ink formulated for another purpose. Before you purchase ink, make sure it says somewhere what writing utensil it’s meant for – dip pens, fountain pens, etc. Many times, manufacturers will list what inks work best with their pens. You can also find forums and blog posts online detailing what inks are best and which ones are not for your writing utensil. If you invest any amount of time or money into your pens, do the same with your ink purchases.