The Microanalysis Society (MAS) is a non-profit professional association dedicated to the advancement and dissemination of knowledge concerning the principles, instrumentation, and applications of microanalysis down to the atomic level. Microanalysis broadly encompasses any analytical method for determination of materials properties at the micrometer and smaller size scale, or microgram or smaller mass scale. Common microanalysis methods include electron microprobe and microscope-based spectroscopies, X-ray fluorescence, and laser and ion mass spectrometries.