The electrical conductivity of weight diluted and concentrated standard seawater as a function of salinity and temperature

The ratios of electrical conductivity of seawater samples of precisely known salinity to standard seawater at the same temperature have been measured over a wide range of salinities from 0 to S and over the full range of oceanic temperatures from -2 to C. The samples with were prepared by accurate weight dilution of standard seawater with distilled water. High salinity samples were prepared by fast evaporation of standard seawater and subsequent weight dilution into the already determined < range. An equation was derived which expresses the S versus relationship very precisely from and at all temperatures, i.e., where C, ; only the first term is required at C. The effeet of temperature on the electrical conductivity of standard seawater was also measured. The ratio of the conductivity at temperature to the conductivity at C ( ) is very aeenrately expressed by a fourth degree equation in . i.e, These two equations are sufficient for all salinity determinations at normal atmospheric pressure.