Evaluation and testing standard of anti - uv finishing products
1. The higher the UPF, the better the sun protection ability
The UPF values obtained from sun protection tests are the most reliable reference for sun protection at present.
UPF uv protection coefficient: the ratio of the average effect of uv radiation calculated when skin is unprotected to that calculated when skin is protected by fabric.
The higher the number, the greater the transmission. UPF50 means that 1/50 of the uv rays can penetrate the fabric and reach your skin.
Different types, colors, and densities of fabrics should have the same sun protection if the UPF is the same.