Days After Culture Optical Density of Culture on Chlorpyrifos of 5 ppm at 660 nm Optical Density of Culture on Chlorpyrifos of 10 ppm at 660 nm Optical Density of Culture on Chlorpyrifos of 25 ppm at 660 nm average optical density of Chlorpyrifos at 660 nm Replica process 1 2 3   C 1 2 3 C 1 2 3 C 5 ppm 10 ppm 25 ppm 3 3.413 3.081 3.247 0.204 3.000 3.777 3.388 0.204 3.000 3.775 3.387 0.204 3.247 3.388 3.387 5 2.741 3.090 2.915 0.191 3.410 3.000 3.205 0.191 3.585 3.486 3.535 0.191 2.915 3.205 3.535 7 2.577 3.196 2.886 0.199 3.298 3.324 3.311 0.199 3.422 3.323 3.372 0.199 2.886 3.311 3.372 9 2.419 2.999 2.709 0.209 3.011 3.000 3.305 0.209 3.378 3.000 3.189 0.209 2.709 3.305 3.189 11 2.387 3.783 3.085 0.218 3.419 3.000 3.209 0.218 3.291 3.784 3.537 0.218 3.085 3.209 3.537 13 2.219 3.784 3.001 0.193 3.113 3.309 3.211 0.193 3.289 3.000 3.144 0.193 3.001 3.211 3.144 15 2.099 3.024 2.561 0.173 3.100 3.202 3.151 0.173 3.400 3.802 3.601 0.173 2.561 3.151 3.601

Table 3: Optical density of culture growing on organophosphate (Chlorpyrifos).