Our table for which pen brands use standard international vs proprietary converters or cartridges for fountain pen filling mechanisms.
This table serves as a guideline for brands that accept the use of cartridge/converter filling system while showing brands that use proprietary cartridges/converters, and which can use the standard international size. Please refer to specific pen models for any exceptions to the below listings:
| BRAND | CARTRIDGES | CONVERTERS |
| ASA Pens | Standard International | Standard International |
| Aurora | Proprietary | Proprietary |
| BENU | Standard International | Standard International |
| Click | Standard International | Standard International |
| Conklin | Standard International | Standard International |
| Constellations 88 | Standard International | Standard International |
| Caran d'Ache | Standard International | Standard International |
| Edison | Standard International | Standard International |
| Epitome | Standard International | Standard International |
| Faber - Castell | Standard International | Proprietary |
| Graf von Faber Castell | Standard International | Proprietary |
| Jinhao | Standard International | Standard International |
| Kanwrite | Standard International | Standard International |
| Karas Kustoms | Standard International | Standard International |
| Kaweco | Standard International | Standard International |
| LAMY | Proprietary | Proprietary |
| Lotus Pens | Standard International | Standard International |
| Montegrappa | Standard International | Standard International |
| Monterverde | Standard International | Standard International |
| Namiki | Proprietary | Proprietary |
| Nemosine | Standard International | Standard International |
| Parker | Proprietary | Proprietary |
| Pilot | Proprietary | Proprietary |
| Pineider | Standard International | Standard International |
| Platinum | Proprietary | Proprietary |
| Sailor | Proprietary | Proprietary |
| Sheaffer | Proprietary | Proprietary |
| Stipula | Standard International | Standard International |
| TWSBI | Not Applicable | Not Applicable |
| Vazir Fountain Pens | Standard International | Standard International |
| Visconti | Standard International | Standard International |
| Waterman | Proprietary | Standard International |
Here's a list of Cartridges that are considered to be "Standard International":
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Diamine
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Graf Von Faber-Castell
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Jacques Herbin
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Kaweco
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Montegrappa
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Monteverde
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Pelikan
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Visconti
Here is a guideline video on "Filling a fountain pen with bottled ink using converter"