The ISO 2834-1: 2020 standard Printing Techniques, Laboratory Preparative Test Prints, Part 1: Paste inks defines procedures for laboratory test printing using paste inks on a variety of substrates such as paper, Cardboard, metal, foil. This standard provides detailed test steps, including methods of operation using motorized IGT-type and prüfbau-type printability testers, with the aim of producing uniform prints with clearly defined ink film thickness. The standard also emphasizes the testing requirements for reference optical density and ink film thickness, ensuring that the prints have reliable reference data when analyzing printing surface properties and fastness. In addition, the standard updates the requirements for test equipment and provides specific guidance on material conditioning and maintenance.