The spherical silica is produced by silica being belted in very high temperature flame.
Spherical silica has characters of high purity, narrow size distribution, high sphericity and low cut point etc.

Test Items		Unit	Typical value	Test Method
Chemical Composition	SiOB₂_B	%	99.9	Weight Method
Chemical Composition	FeB₂_BOB₃_B	ppm	105	Spectrophotometer
Moisture		%	0.08	Weight Method
Whiteness		%	94.5	Whiteness Meter
Extraction Water	Ec	μS/cm	13.0	Conductivity Meter
	Na+	ppm	0.7	Atomic Absorption Spectrometer
	Cl-	ppm	0.4	Auto Electric Potential Titrator
	pH	/	4.2	PH Meter