This International Standard specifies a test procedure for combine harvesters; it applies to all types of combine harvesters. The test procedure specified in this International Standard deals with the measurement and testing of combine harvesters, either of self-propelled or trailed type, either directly cutting the crop or picking it up from a wind-row, for use in several crops. It indicates terminology and methods to be used for measuring important characteristics of combines. It includes both functional and capacity tests, i.e. those conducted over an extended period when ease of operation, ease of adjustment, rate of work and general operating characteristics may be assessed, and those carried out on specific occasions for the determination of grain loss and capacity characteristics.