The performance of a dynamic stability test for moisture sensitivity

The quality of parameter estimates evaluated by the authors from dynamic stability tests which identify kinetic models in the presence of a continually changing moisture environment, is evaluated with respect to their static test counterparts using computer simulated tests. For both the static and dynamic tests, the results show that to gain statistical confidence in the parameter estimates, the relative experimental noise must be minimized (minimize the measurement error and maximize the extent of degradation). The dynamic test procedure yields parameter estimates with less confidence than the static test, because the total extent of degradation encountered within the test is less, hence the relative noise is higher. Therefore, the dynamic stability test is inferior to its static counterpart when all of the assumptions about the system are met, but since the dynamic test evaluates the model parameters under conditions similar to the real system, factors unconsidered in the model are minimized.