This is a non-competitive, brand-name combined synopsis/solicitation for a purchase order to EchoMRI LLC for one EchoMRI-A130 body composition analyzer system. The system will replace an aging EchoMRI unit currently in service at the NHLBI Mouse Phenotyping Core to maintain continuity with over 17 years of research data. The requirement is not set aside for small business and falls below the simplified acquisition threshold.