With MINEQL+'s Tableau Tool, you have access to all mass balance equations and thermodynamic data. Just use the mouse to alter existing data, insert new chemical equations, delete old ones, or move chemical species from one TYPE to another.

The Tableau is designed around the same motif used to study aqueous systems in Morel and Hering's "Principles and Applications of Aquatic Chemistry", Wiley-Interscience, 1993.

The Tableau Tool provides the unique benefit of allowing you to review, edit, and store all reaction data before actually running a calculation. As a result, you are not taking someone else's model and running it, but rather you have the opportunity to create your own models. That is, when you define what components, dissolved species or solids are present in a system, your are, in fact, developing a model- and there's no programming required.

TYPE I-Components: the basic building blocks for all chemical reactions. Often components are present in their most uncomplexed form in MINEQL+.

TYPE II- Dissolved Species: aqueous complexes (i.e., all soluble species excluding components).

TYPE III - Fixed Entites: species with a fixed activity. For a regular solid (e.g., CaCO₃ this is equivalent to having an infinite reservoir of the solid present. Also, gases at a fixed partial pressure would fall under TYPE III species as would any factor (e.g., pH) that must be present at a fixed value.

TYPE IV - Precipitated Solids: solids that have precipitated and have the potential to be converted to a TYPE V (dissolved solids) if they become undersaturated.

TYPE V - Dissolved Solids: solids that have the potential to precipitate if their solubility constaints are exceeded.

TYPE VI - Species Not Considered: species that are monitored but not included in the mass balance calculations.