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UltraBlock filters are designed to block more than 99% of the harmful ultraviolet wavelengths between 200 nm and 380 nm and transmit greater than 90% (average) of the visible wavelengths between 425 nm and 700 nm. The coatings efficiently transmit visible light without changing the color appearance of the source material. Extremely stable over temperature and humidity changes. The UltraBlock product line can be applied to a wide range of transparent substrates. It can also be applied to the highly curved surfaces of lenses, cover glasses, and tubes.

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