A great deal of testing is necessary in the field of inkjet products. Since no useful official standards for the testing of inkjet printers and consumables are available, each company and test institute is developing its own test methods and test charts. As a consequence, we are seeing an uncontrolled growth of test procedures. It is thus impossible to compare results.This was the reason behind the decision of the “Information Technology - Office Equipment Committee” (NI28) of the German Institute for Standardization (DIN) to start the development of standards in this field. The first project in this area was a standard for the rebuilding of used inkjet printheads and ink cartridges.This paper explains the motivation for the test standard. Furthermore, an outline of the DIN 33871-1 standard is given with all definitions, a description of the minimum requirements for the refill process, product signatures, etc. Special emphasis is directed to the test charts for quality and yield measurements. The elements of the test charts are described and a comparison of several test results is presented. The test method for the light fastness is discussed as an example.