Orthotolidine test is used for determination of________________? January 17, 2019 – by admin Orthotolidine test is used for determination of________________? A. dissolved oxygen B. residual chlorine(Correct) C. biochemical oxygen demand D. dose of coagulant
Orthotolidine test is used for determination of________________? A. dissolved oxygen B. residual chlorine(Correct) C. biochemical oxygen demand D. dose of coagulant