Mepee tube ule COD, jide ya n'otu akụkụ wee tinye nwayọọ nwayọọ
2.0 ml nke pretreated sample ngwọta si mmeghachi omume tube na-enweghị agwakọta nke mere na abụọ iche iche n'ígwé
Ngwa
Kpọchie okpu nke ọma iji nwalee tube, jide tube n'akụkụ okpu, tinye tube n'ime karama nchekwa wee maa jijiji
(Ịkpachara anya, ule tube na-aghọ ọkụ). Tinye tube n'ime ngọngọ kpo oku. Malite mmemme kpo oku.
Mgbe awa 2 gachara, wepụ tube ule na ngọngọ kpo oku, kwe ka ọ dị jụụ ruo n'ime ụlọ ma maa jijiji nwayọ
Igwe ọkụ reagent
Hichaa n'èzí tube ule wee tụọ.
Gbanwee fotometer ka ọ bụrụ efu site na iji uru efu "NULL"