What is ISO/IEC 22505- Method for the determination of ink cartridge about?  
The scope of ISO/IEC 22505 is limited to the evaluation of black ink cartridge page yield for ink containing cartridges (i.e. integrated ink cartridges and ink cartridges without integrated printheads) for monochrome inkjet print systems. ISO/IEC 22505 can also be applied to the printer component of any multifunctional device that has a digital input printing path, including multi-function devices that contain inkjet printer components. Both liquid and solid ink products can be tested using ISO/IEC 22505.
ISO/IEC 22505 is only intended for the measurement of ink cartridge page yield when printing on plain paper. No other claims can be made from this testing regarding quality, reliability, etc. ISO/IEC 22505 can be used to measure the yield of any cartridge that is used in a significant amount during the printing of the test page defined in ISO/IEC 19752. ISO/IEC 22505 is not for use with printers whose minimum printable size is equal to or greater than A3 or for printers designed or configured to print photos (for example, maximum printable size less than A4 or a printer configuration intended for photo only printing). In addition, ISO/IEC 22505 only applies to drop-on-demand printing systems.
NOTE 1: Integrated ink cartridge is a cartridge that includes at least: an ink containment part, an ink deposition mechanism, and an ink transport part (see ISO/IEC 29142-1). 
NOTE 2: A cartridge supplier can choose to use more than one market identifier for a single physical cartridge. In this case, only one yield test is performed if there are no differences in the cartridges other than market identifiers.
Who is ISO/IEC 22505- Method for the determination of ink cartridge for? 
 ISO/IEC 22505 on methods for the determination of ink cartridge is useful for: 
- Ink cartridge manufactures
- Quality assessment of printers
- Printer equipment suppliers
- Printing professionals, including auditors, consultants, etc. 
Why should you use  ISO/IEC 22505-Method for the determination of ink cartridge?  
 The purpose of ISO/IEC 22505 is to provide a process for determining the ink cartridge yield for a given monochrome inkjet print system (i.e., integrated ink cartridges and ink cartridges without integrated printheads) using a standard test page.
In the case where a cartridge set can be used in multiple printer models, only one yield test needs to be performed if the difference between printer models does not impact yield.
ISO/IEC 22505 prescribes the following:
- The test method that manufacturers, test labs, etc., use to determine ink cartridge yield
- The method for determination of allowable declared yield value from the test results
- The appropriate method of describing the yield of cartridges in documentation supplied to the consumer by the manufacturer
The cartridge yield is determined by an end-of-life judgment or signalled with either of two phenomena: fade, caused by depletion of ink in the cartridge or automatic printing stop caused by an ink out detection function.
It is envisioned that one of the uses of ISO/IEC 22505 is for the calculation of cost per page (CPP). While ISO/IEC 22505 measures a portion of this cost, it is not used as the sole component of CPP calculation.
 
 
