When it comes to protecting the skin from dangerous solar radiation or UV radiation in spring and summer, most people chemcial sunscreens. The problem is that even the strongest cosmetic sunblock only offers a sun protection factor (SPF) of 50. This also gets washed or rubbed off and must be re-applied several times to ensure long-term protection.
Textiles with UV protection are much more practical. Depending on the specification, they can achieve an ultraviolet protection factor of up to UPF 80. This means that the wearer can stay protected in the sun for up to 80 times longer than the self-protection time that is dependent on the wearer’s skin type.
Because the UV protection factor is neither visible nor tangible, we conduct neutral tests and certifications based on international standards and then offer the Hohenstein Quality Label or UV STANDARD 801 label for consumer communication.
Hohenstein tests and certifies the UV protection according to different standards including, the American Standard (AATCC TM 183), the European Standard (DIN EN 13758-1) and the Australian/New Zealand Standard (AS/NZS 4399) which allow advertising with the Hohenstein Quality Label.
For more reliable UPF information, we recommend UV STANDARD 801, the only standard that incorporates testing for realistic use conditions, such as in wet, stressed and used states (after wear and washing).
In addition to consumer safety and claim verification, Hohenstein tests the UPF for product and material optimization during development.
Factor calculation considers the solar spectrum, typical skin reddening, etc... not just the pure measurements.
Skin is aloso damaged by artificial UV radiation. To specify the UV protection factor of protective clothing for welders, for example, we calculate the UV transmission accordingly for personal protective equipment which can then be used to determine the maximum usage duration of the textiles in the respective welding process.