You do not want to put technical pen ink into a fountain pen. I use it frequently in my technical pen, and anywhere that the ink has a chance to dry out, it dries into a solid crust. It does not reconstitute with water. This means that if it dries out inside your pen, it will leave solid chunks behind, and you won't be able to wash it out with water.
You do not want to put technical pen ink into a fountain pen. I use it frequently in my technical pen, and anywhere that the ink has a chance to dry out, it dries into a solid crust. It does not reconstitute with water. This means that if it dries out inside your pen, it will leave solid chunks behind, and you won't be able to wash it out with water.