It is shown that natural sea water of any chlorinity may be used as a reference solution in the Knudsen method. The proper correction to apply to burette readings of samples can be obtained by means of the fundamental stoichiometric relationship used in computing the "Table of Titration." A table of values for the construction of graphs from which the corrections can be obtained and a sample graph are included.
McGary, James W.. 1955. "Substandard reference solutions in chlorinity determinations by the Knudsen method." Journal of Marine Research 13, (3). https://elischolar.library.yale.edu/journal_of_marine_research/817