Pilot Namiki Fountain Pen Ink Cartridge - Blue - Set of 12

This is a great blue ink. Darker than Parker, Lamy, Sheaffer Skrip, with some shading if you use the right pen. Best of all, highly water resistant, almost fully waterproof.

When you think about how long these cartridges last compared to the international short cartridges, an overall great bargain.

These are the cartridges you need to refill the Plumix. I got the blue-black refill cartridges and thought ink came out looking a bit too gray.

You could also flush out the empty cartridge and refill using your choice of bottled fountain pen inks (which come in a huge variety of colors) with a blunt tipped syringe (I went to the local pharmacy and asked for a syringe with the sharp removed). I have heard that you do need to keep the little purple disc in the cartridge to maintain proper ink flow.

Does anybody know if this is the appropriate refill for the pilot Plumix I just got at my local Target, of all places?