Underwood chart

Underwood chart

[′ən·dər‚wu̇d ‚chärt]
(chemical engineering)
A graphical solution of mass balances for a single equilibrium stage in the calculation of a solvent-extraction operation.
References in periodicals archive ?
Underwood charts Bunyan's attempt to keep a bible-based balance between the (to him) degrading extremes of Ranters and Quakers.