Product Grades Available - SL Series
Click on each grade to see the spec sheet

E-SPHERES® SL Series	Nominal Particle Size Range In Microns	Approximate Particle Mean in Microns	Comments
E-SPHERES SLG	20 - 300	130	General Grade
E-SPHERES SL300	150 - 300	150	General Purpose  Coarse Grade
E-SPHERES SL150	20 - 150	100	General Purpose Fine Grade
E-SPHERES SL125	12 - 125	80	Fine Grade
E-SPHERES SL500	250 - 500	300	Coarsest Grade
E-SPHERES SL75	12 - 75	45	Finest Grade

Technical Specifications - SL Series

Technical Details SL Series	Typical Physical Properties
Form	Free flowing powder
Particle Size	12 - 500 microns
Colour	White
Relative density	0.6 - 0.8g/cc
Bulk density	0.3 - 0.4g/cc
Shell thickness	approx. 10% of diameter
pH of water dispersion	6 - 8
Melting point	1600 - 1800 Deg. C
Compressive strength	~6,500 psi (45 MPa)
Hardness	6 Moh's scale
Refractive index	1.53
Thermal conductivity	0.1 W / m / Deg.C
Oil absorption	~7g/100g

Chemical Properties	Typical (By Weight):
Silica SiO2	55 - 60%
Alumina Al2O3	36 - 40%
Iron Oxide Fe2O3	0.4 - 0.7%
Titanium Dioxide TiO2	1.4 - 1.6%