Ink cartridges
Guides to ink cartridges: specs, measurements, prices and which to choose. 4 Stationery Times guides, each with a direct answer and sourced specs.
Platinum SPN-100A Ink Cartridges: 1.2 ml, 9 Colors
Platinum SPN-100A fountain pen cartridges: two 1.2 ml cartridges a pack, nine dye-ink colors, which are acidic or neutral, Japanese price, pen fit, US stock.
Kaweco Ink Cartridges: Short International, 11 Colors
Kaweco ink cartridges explained: six per pack at about 1 ml each, standard international size, 11 colors and a 10-color mix, which pens they fit, and price.
Pilot Namiki Ink Cartridges: Fit, Capacity & Ink
Pilot Namiki black ink cartridges explained: 12 per box, about 0.9 ml each, which Pilot fountain pens take them, the Japanese IRF-12S box, and water resistance.
LAMY T10 Ink Cartridges: Capacity, Colors & Fit
LAMY T10 ink cartridges explained: 1.25 ml each, five per box, seven colors, which LAMY pens they fit (all but the LAMY 2000), how to fit one, and origin.