... AmericanLaboratory, 15, 58-63 (1983).8. Methods 330.4 (Titrimetric, DPD-FAS) and 330.5 (Spectrophotometric, DPD) for Chlorine,Total Residual,” Methods for Chemical Analysis of Water and Wastes, EPA-600/4-79-020,U.S. ... reported for regulatory compliance purposes.8.5 As part of the QC program for the laboratory, method accuracy for wastewater samplesmust be assessed and records must be maintained. After the analysis ... reactant.Table 3—Calibration and QC Acceptance Criteria—Method 603aParameter for SRange for Range for Range for Q (µg/L) (µg/L) P, P (%)Limit(µg/L)sAcrolein 45.9-54.1 4.6 42.9-60.1 88-118Acrylonitrile...