A screen analysis for a sample of Glauber’s salt from a commercial crystallizer is as follows, where the crystals can be assumed to have a uniform sphericity and volume shape factor.

Use a spreadsheet to determine in microns: 

(a) A plot of the differential analysis, 

(b) A plot of the cumulative oversize analysis,

(c) A plot of the cumulative undersize analysis, 

(d) The surface-mean diameter, 

(e) The mass-mean diameter, 

(f) The arithmetic-mean diameter, and 

(g) The volume-mean diameter.

U.S. Screen 14 16 18 20 25 30 35 40 45 50 60 70 80 Mass Retained, gm 0.0 0.9 25.4 111.2 113.9 225.9 171.7 116.5 55.1 31.5 8.7 10.5 4.4 875.7