Cleaning cartridges should be used for the following reasons:

• Changing from one ink to another. 
• White lines occur when printing documents or pictures.
• Indistinction or broken lines occur in nozzle check pattern.
• Printer has not been used after a long period of time

Epson 2100 kit Includes:

• 7 x individual ink cartridges, each marked with a different coloured label (photo black, light black, yellow, cyan, light cyan, magenta, light magenta)        
• 1 x 20ml syringe
• 1 x bottle of cleaning fluid