Na'urar tace launin shinkafa ta Techik ita ce cire hatsin shinkafa masu lahani ko marasa launi daga babban samfurin, ta tabbatar da cewa hatsin shinkafa masu inganci, iri ɗaya, kuma masu kyau ne kawai za su isa ga marufi na ƙarshe. Lalacewar da mai tace launin shinkafa zai iya ganowa da cirewa sun haɗa da hatsi masu launi, hatsi masu laushi, hatsi masu baƙi, da sauran kayan ƙasashen waje waɗanda za su iya shafar inganci da bayyanar samfurin shinkafa na ƙarshe.
Injin rarraba launukan shinkafa mai aiki da yawa, wanda kuma aka sani da mai raba launin shinkafa, yana rarraba hatsin shinkafa bisa ga bambancin launin shinkafar asali saboda abubuwan da ba a saba gani ba kamar hatsin dutse, shinkafar da ta lalace, shinkafar baƙi, da shinkafar rabin-kasa. Na'urar firikwensin gani ta CCD mai ƙuduri mai girma tana tura na'urar rarraba kayan hatsi daban-daban don raba kayan hatsi daban-daban, kuma tana rarraba hatsi masu launi daban-daban ta atomatik a cikin rukunin shinkafar da ba a dafa ba; cire waɗannan ƙazanta a cikin wannan tsari na iya inganta ingancin shinkafar.