@Francisca Pires
That's for technical pens, not for fountain pens.
I've not tested that for extended periods of time with fountain pens.
For safer waterproof ink for fountain pens, go with Noodler's Bulletproof Black, De Atramentis Document, and Sailor KiwaGuro
@Francisca Pires
That's for technical pens, not for fountain pens.
I've not tested that for extended periods of time with fountain pens.
For safer waterproof ink for fountain pens, go with Noodler's Bulletproof Black, De Atramentis Document, and Sailor KiwaGuro