This inversion algorithm can be used for determining the mixing state of black carbon from experiments combining the CPMA and DMT's Single Particle Soot Photometer (SP2). For the technical background, please see Broda et al. (2017).
The utility requires Igor Pro 7 for PC or Mac. It is provided free to the community with no implied warranty. Download the .zip file, unzip and open the README.txt file for details of how to use.