Wholesale CASE of 10 - Canon PGI250PGBK Pigment Ink Cartridge - High Yield Black Ink for Canon Printers - Perfect for Office, Home & Business Printing Needs

When I asked for the expiration date for this product I was told there was none and that ink cartridges do not have expiration dates... My search online reveals that the expiration dates ARE important because the ink can dry up over time or settle in the cartridge and clog your printer...... "Every ink cartridge has a toner or shelf life. Typically, it is one and a half to two years from the date of purchase. The product s manufacturer and how you store your cartridges can also affect the toner s lifespan. Ink expiration dates are built-in, established dates, after which ink cartridges might no longer work properly. If there is still ink left in the cartridge on that date, it will cause your printer to shut down. The expiration date is based on the fact that the ink s composition transforms over time. Air can work its way inside the cartridge and dissolve the ink carrier. As a result, the ink becomes sludge rather than liquid. That sludge can clog up your printer s ink-delivery system and the ink cartridge s print head. The ink expiration date is designed to keep this from occurring." toptenreviews.com