The Arkray Combidisc GN2 is a 14-arm antibiotic sensitivity test disc for resistant Gram-negative bacteria and Urinary Tract Infections (UTI), providing simultaneous sensitivity results against 14 different antibiotics in a single test. It features unique arms with optimized antibiotic concentrations to prevent zone overlap, uses blocking agents to prevent leaching, and follows strict quality control aligned with CLSI guidelines. This disc is designed for use with conventional petri plates to test for sensitivity to a rational combination of modern and commonly used antibiotics against problematic Gram-negative pathogens.