San Diego Instruments

San Diego Instruments (SDI) is a prominent manufacturer of automated behavioral testing systems designed for life science research, particularly in the fields of neuroscience and toxicology. The company specializes in high-precision instruments for measuring animal behavior, including the industry-standard SR-LAB startle response system and the Rotor-Rod for motor coordination. Their products are extensively utilized by pharmaceutical companies and academic institutions worldwide to screen for drug effects and study neurological disorders in rodent models. SDI's portfolio also includes systems for locomotor activity, place preference, and grip strength testing. In 2020, the company was acquired by Harvard Bioscience, integrating its specialized behavioral analysis tools into a broader suite of preclinical research solutions. Based in San Diego, California, the company continues to support the global research community with standardized hardware and software for behavioral pharmacology.