The model contains one compartment called C. There are two species called S1 and S2 and two parameters called k1 and k2. The model contains two reactions defined as:

Reaction Rate
S1 → S2 k1 · S1 · C
S2 → S1 k2 · S2 · C

The rate constants are identical in both directions, leading to a system where the species concentrations remain the same.

The initial conditions are as follows:

Value Units
Initial concentration of S1 1.5 × 10−3 mole litre-1
Initial concentration of S2 1.5 × 10−3 mole litre-1
Value of parameter k1 0.5 second-1
Value of parameter k2 0.5 second-1
Volume of compartment C 1 litre

Note: The test data for this model was generated from an analytical solution of the system of equations.