The Weak base node supports multiple dissociation steps, where the base of the last dissociation step is uncharged.

The species can be either Monoprotic, subject to one dissociation step only, or Polyprotic. For the latter case, any positive integer larger than one can be used to define the Number of dissociation steps.

Note that the pKa refers to the acid constant of the conjugate acid of the weak base.

See also Common Settings for the Species Nodes in the Electrophoretic Transport Interface and Diffusion and Migration Settings.