Commonly asked questions: Q: What is the difference between PG-540/CL-541 and PG-540XL/CL-541XL cartridges? A: The only difference is the size of sponge inside the cartridge, both standard size and XL size cartridges are physically the same size, but the XL cartridge has a much larger sponge which holds more ink! Q: Will these cartridges work in my printer? A: All WonnaPrint cartridges undergo a strict manufacturing process to ensure full compatibility and high quality printouts. Q: What is the shelf life of these cartridges? A: WonnaPrint ink cartridges can be left in their protective packaging for upto 18 months after purchase, as long as they are stored in a cool, dry place. Once opened, please ensure these cartridges are regularly used in your printer.
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