LAB 4_DISSOLVED OXYGEN, BIOCHEMICAL OXYGEN DEMAND. Leo Law. NANYANG TECHNOLOGICAL UNIVERSITY School of Civil and Environmental Engineering CV2701: Laboratory 2A Laboratory Manual For Experiment Lab 2A-6 (ENV) Wastewater Quality Analysis Location : Environment Laboratory, N1-B3c-49 Session 2004/2005 f WASTEWATER QUALITY ANALYSIS - DO, BOD, COD