Lokacin amfani da bututun gwajin cod, yawanci muna yin amfani da samfurin da za a gwada shi cikin bututun gwaji kuma muna girgiza bututun mai ƙarfi don dakatar da dukkan laka. Cire hula na COD gwajin bututu kuma ƙara 2 ml na samfurin ta amfani da pipette.
Babban kewayon oxygen ne, COD Didiil Cones, COD): COD): COD): COD): COD) Daro: 20 -1500 MG \ / l cod 150 \ / l cod ya ƙunshi Mercury. 150 \ / Gwaji ya ƙunshi Mercury.
