of a glass electrode from the hydrogen-ion response function. An example often encountered is the error due to sodium ions at alkaline
values, which by convention is regarded as positive.
PAC, 1985, 57, 531
(Definition of pH scales, standard reference values, measurement of pH and related terminology (Recommendations 1984))
on page 540
IUPAC. Compendium of Chemical Terminology, 2nd ed. (the "Gold Book"). Compiled by A. D. McNaught and A.Wilkinson. Blackwell Scientific Publications, Oxford (1997). XML on-line corrected version: http://goldbook.iupac.org (2006-) created by M. Nic, J. Jirat, B. Kosata; updates compiled by A. Jenkins. ISBN 0-9678550-9-8. doi:10.1351/goldbook