Oxygen-emfiter what is it??

أفضل جواب: <p>Bio chemical oxygen demand we can take in to account.  But COD is the quick method to know the e ... الإطلاع على المزيد

أفضل جواب: BOD (Biochemical Oxygen Demand), also often referred to as biological oxygen demand, is a test performed ... الإطلاع على المزيد

أفضل جواب: true19.5-percent-is-lower-limit-for-oxygen الإطلاع على المزيد

أفضل جواب: a) septic conditions Gaseous H2S - which produced through series of reactions in the waste-water acidifie ... الإطلاع على المزيد