IEC 62899-302-6:2025 specifies the method for determining inkjet first drop behaviour based on either visualized droplet images or printed dots on standard substrate. The exact behaviour that is referenced in this document is as follows: jetting speed variation according to the drop numbers, including non-jetting and low jetting speed. This measurement standardization is limited to drop-on-demand type of inkjet including piezo and thermal types and is not applicable to continuous inkjet. This document includes the test equipment, printing procedures, and analysis of drop behaviour. This document is limited to printed electronics application and is not suitable for graphic or other applications.