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+//water//
+//page 1.72 example 1//
+clc
+vol_init=50//initial volume of sample in ml//
+vol_fin=80//final volume of sample in ml//
+DOb=840//dissolved O2 present in effluent sample before incubation in ppm//
+DOi=230//dissolved O2 present in effluent sample after incubation in ppm//
+DF=vol_fin/vol_init//dilution factor//
+BOD=(DOb-DOi)*DF//in ppm//
+printf("\nBiological Oxygen Demand(BOD) of the sample is %.f ppm",BOD); \ No newline at end of file