Akamashini gapima imikorere gakoresha uburyo busanzwe bwo gukaraba dichromate. Buri gihe gafata icyitegererezo cy'amazi, kongeramo ingano nyayo ya potasiyumu dichromate (K₂Cr₂O₇) oxidant na aside sulfurike (H₂SO₄) hamwe na silver sulfate (Ag₂SO₄) nk'umusemburo, kandi gashyushya uruvange kugira ngo kavugurure oxydation. Nyuma yo gukaraba, dichromate isigaye ipimwa hakoreshejwe colorimetry cyangwa potentiometric titration. Igikoresho kibara ingano ya COD hashingiwe ku ikoreshwa rya oxydation. Modele zigezweho zihuza reactors zo gukaraba, sisitemu zo gukonjesha, na modules zo gufata imyanda kugira ngo habeho umutekano n'ubuziranenge.