Ukusetyenziswa kwe-quartz yeglasi yesibane se-ultraviolet ityhubhu, ukuhanjiswa okuphezulu, isiphumo esingcono sokuvala inzala.
Xhuma kwaye uvule, Ulawulo olukude olungenazingcingo.
I-UV ekude @222nm yokubulala iintsholongwane, akukho bungozi emzimbeni womntu.