3. Gucapura ibintu bihuye n’ubunini bw’imashini. uburyo bwo gucapura bw’ibikoresho ni buke, iyo ruri hejuru y’urugero, ntirushobora kurangiza icapa, rwitwararika cane aho icapa ry’icapa ry’imbere rihinduwe kandi ahantu h’icapa ry’ivyiyumviro rifise itandukaniro rikomeye, ndabinginze muvugane n’abahinguzi imbere y’igihe.
4. Guhindura itara ry'UV UV, igikoresho co gukiza wino canke igikoresho co gukiza w'irangi ry'infrared.
