Ngokuhlolwa kwe-AIJiren COC TUBE, umsebenzisi ngamunye angenza kalula ukutholwa kwamanzi okubucayi kakhulu nokunembile. Isikhathi esidingekayo senqubo yokulinganisa sifinyezwa kakhulu, ikakhulukazi ukuhlaziya okujwayelekile kanye nokulinganisa, ngenkathi kunciphisa kakhulu umthwalo. I-COD test tube iqukethe umthamo oqondile we-reagent. Ngakho-ke, amasheya amaningi ngokweqile agwemeka futhi ukuphepha komsebenzi kuyathuthuka.