Source:http://linkedlifedata.com/resource/umls/id/C0020283
MSH: The normality of a solution with respect to HYDROGEN ions; H+. It is related to acidity measurements in most cases by pH = log 1/2[1/(H+)], where (H+) is the hydrogen ion concentration in gram equivalents per liter of solution. (McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed),NCI: Quantity of dimension one used to express on a scale from 0 to 14 the amount-of-substance concentration of hydrogen ion of dilute aqueous solution, calculated as the logarithm of the reciprocal of hydrogen-ion concentration in gram atoms per liter.,MSH: The log 1/2[1/(H+)], where (H+) is the hydrogen ion concentration in gram equivalents per liter of solution. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed),NCI: A measure of the acidity or alkalinity of a fluid on a scale of 0 to 14.(NCI),HL7V3.0: <p>pH(1 mol/l)</p>