If you use cartridges, but colors are limited for your brand of pen, perhaps an ink converter and bottled ink are an option. Here you will see every fountain pen ink converter we carry. Make your choice carefully or if you'd like a 'hand', give us a call at 720.259.1601.
If you would like to use bottled ink, but have only used ink cartridges in the past, then look for your brand of pen to see if we sell an ink converter designed by your pen's manufacturer. If you do not see your brand of fountain pen or do not know the brand of fountain pen, then it may be best to call customer service, 720.259.1601, and answer a few questions so we can decide together which ink converter may work in your fountain pen.
Using an ink converter in place of a cartridge is a very efficient habit and saves the empties from the landfill. Filling your pen with a converter is simple. Give it a try!