Particle size analysis report includes how to describe distribution width when describing the distribution of the sample. Diameter analyzer represents diameter of particle sometime diameter of smoke particle. Diffraction software runs different calculations on distribution basis and distribution calculation. Laser diffraction analyzer is one of the particle characterization tools. Particle size analysis involves distribution of liquid droplets/particles. Typical points are distribution points. Distribution width (D90-D10)/D50 is a key for quality control. Size analysis report includes Dv0.1, Dv0.2, Dv0.5, Dv0.5 median, Dv0.8, Dv0.9, Dv50 etc. Z average and particle size distribution is important for wollastonite. X (size) and Y(percent) axes interprets the particle size distribution.