"SEMI-AUTOMATIC W/CALIBRATING GAS KIT,CAPABLE OF MEASURING PH,PC02;P02 AND CALCULATES BICARBONATE,HC03;TOTAL C02 AND BASE EXCESS,MINIMAL RANGES,PH6.0 TO 8.0;PC02,0.0 TO 200.0 MMHG;P02 1.0 TO 200.0 MMHG;TOTAL C02,0 TO 100 MM/L;HC03,0 TO 100 MM/L AND BASE EXCESS,P40 TO M40 MEQ/L;SAMPLES SIZES 250 UL AND 500 UL;BUILT-IN SAMPLE CHAMBER FLUSH SYSTEM"