IUPAC has recommended the use of term
conductivity over specific conductance and hence we shall use the term
conductivity in the rest of the book The SI units of conductivity are
S m–1 but quite often, k is expressed in S cm–1 Conductivity of a
material in S m–1 is its conductance when it is 1 m long and its area
of cross section is 1 m2 It may be noted that 1 S cm–1 = 100 S m–1