How to handle Cartridges   1. Handle your cartridges with care. Do not touch the print nozzle with your hands. 2. Do not let unwrapped cartridges sit outside of the printer or the print nozzle may become clogged with dry ink.     If you are not going to use a cartridge for a long time, wrap it with plastic wrap or masking tape and put it in a     zip-lock bag.     Do not use adhesive tape to wrap the cartridge. 3. Refill before the cartridge is fully empty if possible(such as light prints or white streaking).     The refilled cartridge will then print without problems and the cartridge will last for many more refills. 4. Never place a leaking cartridge back into the printer. If the cartridge is leaking heavily, place it on a folded     piece of paper or in a disposable cup and let the excess ink run out. When the leaking stops,     wipe the cartridge clean and put it back into the printer. 5. If you do not use your printer often, clean the printhead before printing 6. Refilled cartridges work best if they are allowed to sit in an upright position (Printhead down)     for a few hours before reinserting into your printer. 8. It is best to have two cartridges ?     when one runs out replace it with your ‘spare’ and then contact your nearest Dr. Ink Agency to refill.