OD 680 1 2 3 4 5 6 7 8 9 10 11 12 A 0.024 0.027 0.027 0.028 680 B 0.089 0.089 0.091 0.026 680 C 0.132 0.135 0.142 0.028 680 D 0.027 680 E 0.026 680 F 0.028 680 G 0.027 680 H 0.028 680 calibration curve: "y=7E-08 - 0,0188" x=A+0.0188/7E-08 algae - cell density calculation replicate 1 replicate 2 replicate 3 AVG AVG-blank # cells/mL target # cells/mL Dilution factor Dilution factor rounded down blank 0.024 0.027 0.027 0.026 algal suspension - culture 1 0.089 0.089 0.091 0.089666667 0.063666667 1178095.2 200000.0 5.89047619 5 algal suspension - culture 2 0.113 0.111 0.114 0.112666667 0.086666667 1506666.7 200000.0 7.533333333 7