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1 <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br />1 <br /> <br /> <br /> <br />~~ <br /> <br /> <br />1 <br />1 <br /> <br />fl/l~ <br />Western Atlas <br />International <br />CORE LABORATORIES <br />IT I T I F I <br />ANALYTICAL CHEMISTRY DIVISION QUALITY ASSURANCE MANUAL <br />SOP N0. REV15l0N ND. EFFECTIVE DATE PAGE <br />HC-QAC-02 0 1/06192 74 of 104 <br />• Quality control samples must be analyzed with each batch of samples <br />where applicable and available. <br />• Quality control data which is associated with a sample batch must <br />entered into LIMS along with field sample analytical results. <br />• Quality control data which does not meet the method-specified acceptance <br />criteria must be brought to the attention of a laboratory section superviso <br />or the QAIQC coordinator for review. <br />• If quality assurance data does not meet the method-specified acceptance <br />criteria, analytical results for that batch of samples may also be <br />questionable. Do not report analytical results to the client until this data <br />has been reviewed and validated by the laboratory section supervisor or the <br />QA/QC coordinator. <br />Due to limitations in the methodology or the lack of suitable reference <br />materials, certain parameters do not require all of the quality control samples <br />which are specified in the following sections. Specific quality control check <br />samples and acceptance criteria for each method are taught dying analytical <br />method training. <br />Method Blanks <br />Method blanks should be analyzed once per batch of samples or at <br />frequency of 10°l0 of the sample population, whichever is greater (i.e., 1-1 <br />samples, 1 blank; 11-20 samples, 2 blanks, etc.). <br />Analyzed value must be ± the method detection limit or applicable <br />limit. <br />Initial/Continuing Instrument Calibration Blanks <br />For instrumental analysis, an initial instrument calibration blank must be run <br />prior to sample analysis. Continuing instrument calibration blanks should be <br />analyzed once per batch or at a frequency of 10% of the sample population, <br />whichever is greater. <br />