Converter Types

• ​Piston Converters  - Utilizes a twisting motion to push air out and then pull the air/ink back when twisting it counter clockwise.
• Squeeze Converters - Utilizes a squeeze mechanism on the bladder to pull ink out from the bottle

Standard vs Proprietary Converters/Cartridges

• ​Standard International -  Standard size that will fit most fountain pens that don't use a proprietary converter/cartridge (ex. Monteverde)
• Proprietary - a converter or cartridge that is brand specific to fit a specific model or brand (ex. Lamy) 

Note: While a majority of fountain pens use the standard international converters or cartridges, some models may not. This fountain pen converter/cartridge guide is meant as a recommendation. Please refer to your specific pen’s instructions for acceptable converter/cartridge sizes, or feel free to contact us at support@penboutique.com or call us at (410) 992-3272 if you have any questions.