You could have downloaded IsoSource 1.2.0.12 from our software library for free. This free PC program can be installed on Windows 7/8/10/11 environment, 32-bit version. Our antivirus scan shows that this download is virus free. IsoSource lies within Education Tools, more precisely Science Tools. The actual developer of the free software is U.S. EPA. The most popular versions among the software users are 1.3 and 1.2. The common filename for the program's installer is IsoSource.exe.
From the developer:
IsoSource is a Microsoft Visual Basic software package which calculates ranges of source proportional contributions to a mixture based on stable isotope analyses when the number of sources is too large to permit a unique solution (> number of isotope systems 1).
This software provides the distribution of source proportions which are consistent with isotopic mass balance.
You may want to check out more software, such as SatCalc, MathMatic or ChemDBsoft Lite Demo, which might be similar to IsoSource.