Our rods have a ratios > 35, indicating > 95% shape purity Optical Density can be calculated using the formula In the case of homogenous colloidal solutions (such as Gold Nanoparticles), the optical density is a function of the solution's concentration Therefore, optical density can also be expressed asThe linearity is determined by adding the optical antipodes in 6 different levels of concentration The linearity is determined by the correlation coefficient and slope of the regression line The correlation coefficient is >099 The plot of the signal versus the concentration of the optical antipode is linear by visual inspectionA ratio of ~ is generally accepted as "pure" for RNA Common Problems Abnormal 260/280 ratios usually
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