A method for use with a data entry system for providing input data to a pharmaceutical compounding device having an associated plurality of source solutions, the method comprising the steps of: a) generating a first label comprising first indicia defining an allocation of said plurality of source solutions conforming to a predetermined configuration； b) providing said first indicia to said pharmaceutical compounding device as an input； and c) generating a pharmaceutical compound based on said indicia input into said pharmaceutical compounding device. d) generating a second label comprising second indicia indicative of at least said pharmaceutical compound； e) providing first indicia to a comparison device as an input； f) providing said second indicia into said comparison device as a further input； g) comparing at least a portion of said first indicia with at least a portion of said second indicia； and h) determining if said pharmaceutical compound matches said predetermined configuration based on said comparison.
