... example of the separationsachieved by this column is shown in Figure 2.12.9 Calibrate the system daily with a minimum of three aliquots of calibration standards,containing each of the phenols of ... the required analysis of a QC check standard willdepend upon the number of parameters being simultaneously tested, thecomplexity of the sample matrix, and the performance of the laboratory.8.4.1 ... Mass of underivatized phenol represented by area of peak in sample chromatogram, determined from calibration curve in Section 7.5.3 (ng).V = Volume of eluate injected (µL).iV = Total volume of...