UPF Clothing – 10 Facts
Fact # 2 – UPF (Ultraviolet Protection Factor) is the official way to measure the UV protection for fabrics and clothes. When buying protective clothes look for the UPF rating only.
Fact # 3 – UPF ratings began in the 1990s in Australia. Where the Ozone layer is getting thinner and skin cancer began to be frighteningly common.
Fact # 4 – UPF rating indicates how much UV radiation will the fabrics allow to pass through. UPF 25 means 1/25 (4%) of UV radiation will pass. UPF 50 means 1/50 (2%) will be able to penetrate the fabrics.
Fact # 5 – The highest UPF protective level is 50+, which means less than 2% of the UV-R may be penetrating the clothes. There is no UPF higher than 50+.
Fact # 6 – UPF protective clothes lose up to 30% of their protection when wet..
Fact # 7 – UPF clothes lose up to 40% of their protectiveness when stretched out.
Fact # 8 – Laundry does not reduce the protection level of UPF woven or knitted fabric of cotton apparel. Though some harsh detergents may affect it.
Fact # 9 – There are three main regulation on UPF clothing: AS/NZS (Australia/New Zealand) AATCC (USA) and ASTM (European) standards.
Fact # 10 – Advance textiles and fabrics score better for UPF ratings. Polyester & Nylon are best for UV reflection. Wool and silk are moderately effective. Cotton, rayon, flax and hemp have naturally low ability to block or reflect UV.
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