Figure 7
From: Improving accuracy of cell and chromophore concentration measurements using optical density
OD measurements which avoid absorption peaks provide robust biomass correlation. Correlation between biomass density and optical density for Nannochloropsis algae cultures grown on high and low nitrogen to alter the chlorophyll content. Measurements corresponding to chlorophyll absorbance (~680 nm, figure inset) display very different correlation as compared to the correlation at the robust wavelength (ODR) of 550 nm.