How do I spot a counterfeit?

We are continually looking to improve our counterfeit detection process and should you wish to check the validity of your product please refer to the manufacturers websites listed below.

http://www.canon.co.uk/For_Home/consumables/PIXMA_Ink_and_Papers/sure_its_genuine.aspx

http://www.epson.com/cgi-bin/Store/jsp/DFE/Inks/Why.do?BV_UseBVCookie=yes

http://www.hp.com/sbso/product/supplies/whybuy_fraud.html

http://www1.lexmark.com/en_US/products/cartridge-authentication.shtml