In stoichiometric network analysis (SNA)
the instability condition is calculated by the current rates.
Recently, we have shown that in the final result the current
rates can be substituted by reaction rates, which is a more
appropriate value for the examination of instability from
experimental point of view. Here, we elaborate the problem
of whether the current rates are necessary parameters
in the calculation, with the aim of obtaining the region
of instability. All calculations are performed on a model
for Belousov-Zhabotinsky (BZ) reaction, which has not
been examined by SNA.