Laserfiche WebLink
CORE LABORATORIES <br />~ ~//1~ <br />' Western Atlas <br />International <br />..,n... coo, <br />' ~T ITI F <br />ANALYTICAL CHEMISTRY DIVISION QUALITY ASSURANCE MANUAL <br />' SOP N0. REVISION N0. EFFECTIVE GATE PAGE <br />HC-QAC-02 0 1/06!92 74 of 104 <br /> <br /> • Quality control samples must be analyzed with each batch of samples, <br /> where applicable and available. <br />' <br /> • Quality control data which is associated with a sample batch must be <br /> entered into LIMS along with field sample analytical results. <br />' <br /> Quality control data which does not meet the method-specified acceptance <br /> criteria must be brought to the attention of a laboratory section supervisor <br /> or the QA/QC 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 suircable 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 during analytical <br />' method training. <br />' y~lethod Blanks <br /> Method blanks should be analyzed once per batch of samples or at a <br /> frequency of 10% of the sample population, whichever is greater (i.e., 1-10 <br /> samples, 1 blank; 11-20 samples, 2 blanks, etc.). <br />' Analyzed value must be ± the method detection limit or applicable reporting <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 /> <br />