A fountain pen needs your love as well as care, presenting a pen cleaning solution that will help clean your pens in a better way.
How to use: Vazir Pen Cleaning Solution
Wash pen with usual tap water . 
Add pen flush to  Water and flush the pen again with the solution 
Wash again with normal water ( or preferably distilled water if you are going to keep for longer periods )
For more stubborn stains keep the section / unit immersed in the solution for hours / overnight .
Solution can be made as  from mild to strong according to ink stains 
Mild - 5 drops in 100 ml 
Moderate solution - 1 ml to 2 ounces of water
Strong solution - 1 ml to 1 ounce of water
1 ounce is approx 30ml