The Vitagas 5 series blood gas electrolyte analyzer are specially designed for accurate and rapid determination of the partial pressure of oxygen and carbon dioxide, the ionconcentration of electrolyte,the concentration of glucose and lactate, the pH and Hctvalues in arterial blood of patients. The sensor system of this analyzer integrates microelectrode technology and isapplied to the measurement of blood gas values, including: pH, pCO2, pO2, Hct, K+, Na+, Cl-, Ca2+, Glu, Lac. The whole system is controlled by a microprocessor and has a hierarchical menusoftware structure, which makes the operation for users is simple and convenient.