I'm a fountain pen user. Cleaning fountain pens can be tedious at times, especially if you have crusty ink lodged in the feed. After cleaning pens normally, I now throw these in the ultrasonic cleaner and that manages to loosen any residual inkk. A quick rinse afterwards removes all traces of previous ink. This would be a great addition for any fountain pen user looking to deep clean their pen nibs and feeds, especially when they are doing an ink color change.
Rating:
[5 of 5 Stars!]