Choose your ink from seven colors. These inks come in cartridge form, or you can load your pen directly from the bottle.
Undo the barrel of the pen by grasping the nib section and twisting the barrel counterclockwise.
Remove the old cartridge and push the replacement in until you feel it click into place.
Refill the ink reservoir by first dipping the nib into the ink bottle. Depending on the model, fill the reservoir by either turning the converter several times in a clockwise direction, or by pulling the plunger.
Replace the barrel. Wipe the nib with a piece of tissue or a lint -free cloth. Test the pen by writing a few lines.