Shares all the features of the OPTI Medical Systems OPTI® CCA TS Blood Gas and Electrolyte Analyzer but does not have a touch screen Innovative Optical Technology Provides fast accurate results for blood gases, acid-base balance, electrolytes, ionized calcium, and glucose Virtually Maintenance Free Run samples of whole blood, plasma and serum on single-use disposable cassettes --- Return Policy Items are sold as-is with no returns or refunds available unless explicitly stated.