Safofin hannu na kariya na zafi safofin hannu ne masu kariya waɗanda zasu iya toshe zafi mai zafi kuma su hana shi cutar da hannuwanku. Ana amfani da shi mafi yawa a cikin yanayin zafi mai zafi a cikin semiconductor, kayan lantarki, ingantattun kayan aiki, haɗaɗɗun da'irori, nunin kristal ruwa, kayan aikin gani, abinci da sauran masana'antu.