... High purity&heating-resistanceOD range 1.2mm-360mm, Silicon Dioxide>99.995%Transmittance of visible light>90% a ) ... titanium, aluminium, iron outside, calcium, magnesium, potassium, sodium, lithium seven impurity elements of the total content of not greater ... equipment,fry&baking equipment, sterilizing device7. technical datasilicon dioxide>99.95%transmittance of visible light>90%,OH content less ...