What Is A Good Upf Rating
Ultraviolet Protection Factor UPF is a spectral transmission analysis which can quantify exactly how much UV radiation permeates materials.
What is a good upf rating. The rating is typically associated with clothing specially designed for sun protection. Factors of 40 45 and 50 protect from all but about 25 of the suns UV rays. What you need to know.
As with SPF a higher UPF rating means greater protection. For instance a 25 UPF rating means the fabric lets in 125 or 4 of the UV radiation and a garment with a UPF rating of 50 lets in 150 or 2 of the UV radiation. Ratings may vary but according to The Skin Cancer Foundations recommendations a UPF of 30-49 offers very good protection while UPF 50 rates as.
A rating of 25 30 or 35 is considered very good allowing only 41-26 through. Of course you wont find a UPF rating on just any piece of clothing. However a good rule of thumb for a fairly standard cotton shirt is to assume a UPF rating of about 5.
There are a lot of different factors that impact a shirts UPF rating so every shirt is different. One big advantage of the UPF standard is that both UVB AND UVA are measured. UPF is a rating thats used to measure the amount of UVA and UVB radiation that comes from the sun and is able to penetrate a persons clothing and reach their skin he said.
Benefits of UPF UPF is to clothing what sun protection factor is to sunscreen it indicates the fraction of UV light that can penetrate a fabric. Good is 15-24 Very Good is 25-39 and Excellent is 40-50. This means that this fabric will reduce your skins UV radiation exposure by 50 times 98 UV block in areas where the skin is protected by the fabric.
Topical SPF is a. While most fabrics do provide some level of protection their UPF ratings are not all equal or as high as you may think. They should have a UPF rating above 50 UPF 50 for their UV protection fabrics.