Syro I and Syro II are automated peptide synthesizers engineered for scalable, high-throughput research. Their modular reactor block design supports multiple formats and synthesis scales, accommodating evolving laboratory requirements. Syro I uses a single robotic arm for routine synthesis, while Syro II incorporates dual arms for significantly increased capacity. Precision syringe pumps provide accurate reagent dispensing, and a variable-speed vortex mixer ensures consistent reaction performance. Syro XP software manages reagent calculations, protocol customization, and full workflow automation. Together, these systems deliver reproducible results, improved efficiency, reduced waste, and exceptional flexibility for advanced peptide development workflows.