(crystal)powder and fused silica lump and powder,

3. Fused Quartz (Silica)
1st grade: SiO2: 99.9% min; Fe2O3: 30ppm Max..
2nd grade: SiO2: 99.8% min; Fe2O3: 60ppm Max..
3rd grade: SiO2: 99.7% min; Fe2O3: 100ppm Max..
4.Fused Quartz (Silica) Powder
SiO2: 99.8-99.9% Max.; Fe2O3 : 3-180ppm Max.; size:4-600mesh.
5. Micro-silica Powder
(1) SiO2: 99.90%min; Fe2O3: 8ppm Max.; Al2O3 :50ppm Max; size:300 mesh
(2) SiO2:99.80%min; Fe2O3: 8ppm Max.;Al2O3 :50ppm Max;size:400 mesh
(3) SiO2:99.70%min; Fe2O3:9ppm Max.;Al2O3 :60ppm Max; size :600 mesh
6.NATURAL CRYSTAL POWDER
SiO2: 99.90%min-99.99%min , size:2-300 mesh
7.QUARTZ TUBE: Clear fused quartz tubing, ozone-free or germicidal quartz tubing, uv-block quartz tubing.