He marara mo nga rangi katoa

Ko te marara mo nga rangi katoa he whakamarumaru ra.He nui te marara takai, ahakoa te ua, te ra ranei ka taea te whakamahi.Na, he kino ki te whakamahi i te marara mo nga rangi katoa?Ko te tikanga kaore.

Ko te matua ki te whakamarumaru UV e whakawhirinaki ana ki te kakahu marara ka tukuna ki te UV.He rawaka te whakamarumaru UV.Engari, he kino te hua.Heoi ano, he ahuatanga motuhake.Hei tauira, ahakoa kaore he maimoatanga UV, he vinyl.Engari ko tana hua anti - ultraviolet he pai ake i nga hua noa.Mena he pai te kounga o te papanga, ka taea e te taurangi UV te eke ki te 600+ me te reiti whakamarumaru kua tata ki te 100%.Ina tikina he marara, whakatuwherahia kia titiro ki nga atarangi o te whenua.He pouri ake nga atarangi.Mena he nui ake te UPF (te uara tauwehe whakamarumaru ultraviolet) i te 30 me te tuku UVA (UVA) he iti iho i te 5% ka taea te kii he hua aukati UV.Ko te paerewa taumata tiaki ko "UPF30 +";Ka nui ake te UPF i te 50, e tohu ana he pai te whakamarumaru UV o te hua.Ko te taumata whakamarumaru kua tohua hei "UPF50 +".