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Platinum Carbon Black
Platinum Carbon Black is a solid choice when I want a crisp, readable writing sample that behaves predictably. I used it here to show how the Submarine lays down a practical everyday line without the ink becoming the distraction.
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Pros
- +Strong, high-contrast black for clear writing samples
- +Dependable choice for consistent testing across pens
Cons
- -Not ideal if you’re specifically chasing shading or color variation
