Aerospace Medicine Technical Reports

FAA Office of Aerospace Medicine
Civil Aerospace Medical Institute


Report No: DOT/FAA/AM-68/23

Title and Subtitle: A table for converting pH to hydrogen ion concentration [H+] over the
range 5-9

Report Date: October 1968

Authors: Fiorica V

Abstract: The wider use, in the future, of hydrogen ion concentration (H+) rather than pH to describe and evaluate acid-base status will require interconversion of the two notations until a final standard is adopted. The relationship between pH and (H+) is given by the general expression pH = - log (H+). Tables relating pH and (H+) have been constructed according to the above expression and will eliminate the need for mathematical computation over a range covering most biological applications.

Key Words: PH factor, tables, concentration, acid base equilibrium

No. of Pages: 32

Last updated: Friday, June 1, 2012