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Test criteria

Testing the Ultraviolet Protection Factor (UPF) of textiles is done according to the Australian/New Zealand Standard (AS/NZS 4399), European Norm (DIN EN 13758-1) and/or the American Standard (AATCC TM 183). UPF allows an evaluation of UV protection provided by textiles with respect to the spectral composition of sunlight and human skin sensitivities.

For the Australian/New Zealand Standard (AS/NZS 4399), the solar spectrum of Melbourne, Australia is simulated. The European standard (DIN EN 13758-1) and the American standard (AATCC TM 183) apply the solar spectrum of Albuquerque, USA, where the solar radiation is similar to that of Southern Europe.  

The standards listed here describe UV protective properties of textiles when they are new and have not been subjected to use or wearing. Depending on the level of UPF detected, grades of "Minimum" (UPF 15), "Good" (UPF 30) or "Excellent" (UPF 50, 50+) are  classified.

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