Does my fountain pen use international or proprietary cartridges / converters?Updated 10 months ago

Most modern fountain pens use a cartridge/converter filling system (c/c for short) giving the writer the option of using a pre-filled, disposable ink cartridge or a piston-operated converter to fill with bottled ink.

Standard International pen cartridges and fountain pen converters are commonly used in most fountain pens. International cartridges are made in short or long sizes. International converters are made in one size. A variety of manufacturers produce the same style of cartridge or converter and they are all compatible with each other.

On the other hand, certain fountain pen brands may use cartridges and converters that are proprietary (made to fit) their pens. Within a brand, there may be a few different types of cartridges and converters that fit particular pen models.

Click the link to this chart to find the brand of pen you use and see if it is compatible with standard international cartridges/converters, or if it uses proprietary cartridges/converters.