ABACUS TPN Calculation Software, Baxa: 8300-0045 ABACUS CE (Calculator Edition), 8300-0046 ABACUS SE (Single-Workstation Edition), 8300-0047 ABACUS ME (Multi-Workstation Edition) || ABACUS is a Windows¿ - based order entry TPN software application for comprehensive calculations and label printing. The primary use of Abacus is for TPN order calculations. Other uses of Abacus include: non-TPN volumes administered to patients on TPN therapy in order calculations; CVVH calculations; Cardioplegia (Buckburg) calculations; Epidural calculations; Dilutions from concentrated ingredient; Combinations of multiple ingredients; Fractional doses from larger volumes