You may be wondering….. can cartridges just keep being refilled over and over again? This all depends on the type of cartridge and how well you take care of your cartridges. We test your cartridges after they have been refilled/re-manufactured, hence our 100% satisfaction guarantee. Inkjet cartridges can be refilled up to 4 or 5 times and laser cartridges many more, depending on the original condition. Your Cartridge World specialist will be able to tell you.