A KAL file is a data file created by Kratos Vision, a software program used to analyze X-ray photoelectron spectroscopy (XPS) data. It contains data from multiple spectrums (spectra) recorded by Kratos Analytical instruments. KAL files also store information about the context of the experiment so that it can be reproduced.

Kratos Analytical hardware and software are used in scientific research labs to analyze the biochemistry and surfaces of objects. The XPS instruments record the interaction between the surface of an object and other materials. These interactions of the physical and chemical properties can be saved inKAL files by Kratos Vision. You can use Kratos Vision or CasaXPS to open KAL files. If you have a .DSET file and want to convert it to a KAL file, use the following command on a Unix workstation: dump_dataset filename.dset all > new_filename.kal