We have Quartz Silica powder with Maximum Purity Of 99.72% Sio2. The Mesh Size is available from 100 Mesh to 300 Mesh. The Brightness in 1st grade quartz powder is 97%. The Minimum Sio2 % in our Mining area is 98.4% it means we have 98.4% purity in our lower grade which it best available in India.