it is demonstrated that a solution of phosphate ( na2hpo4 , kh2po4 , each 25 mmol/liter ) , bicarbonate ( nahco3 , 30 mmol/liter ) , and chloride ( nacl , 30 mmol/liter ) in glycerol-water mixture ( 3/7 by vol ) and equilibrated with co2 in air ( 4 vol/100 vol ) and co2 in nitrogen ( 8 vol/100 vol ) , respectively , makes possible acurate and simultaneous calibration of the ph , pco2 , po2 electrodes of a corning model 165 blood-gas analyzer .
C0005367
bicarbonate
C0074722
nahco3