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Frequently Asked Questions

Infrasil® 301 and 302 are optical quartz glass grades manufactured by fusion of natural quartz crystals in an electrically heated furnace.

Infrasil® 301 and 302 combine excellent physical properties with very good optical characteristics especially in the IR and the visible wavelength range.

Suprasil® 300x family of materials is a high purity synthetic fused silica materials manufactured by flame hydrolysis.

The index homogeneity of Infrasil® 301 and 302 is controlled and specified either in one direction (the direction of use or functional direction) or even in all three directions.

Suprasil® 3001, 3002, 300 is the best choice for infrared region.

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