Figure 3From: Refractometer assessment of colostral and serum IgG and milk total solids concentrations in dairy cattleBland-Altman plots of milk total solids concentrations concurrently determined by spectrophotometry and refractometer. Bias was calculated as the total solids concentration determined by spectrophotometry minus the corresponding paired analyte concentration as determined by the refractometer. The solid represents the mean bias whereas the dashed lines represent the 95% limits of agreement (mean ± 1.96 SD).Back to article page