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i 1 <br />~~,', CORE LABOI~tATORIES <br />~ ' ~ Western Atlas <br />International <br />m+... mss.. <br />. ~ . ~ r ~' -_-- <br />~ ANALYTICAL CHEMISTRY DIVISION QUALITY ASSURANCE MANUAL <br />SOP NO. REVISION NO. EFFECTIVE DATE PAGE <br />HC-QAC-02 0 1/06/92 64 of 104 <br />12.0 INSTRUMENT AND ANALYTICAL PROCEDURES <br />1 <br /> <br /> <br />1 <br /> <br /> <br /> <br />1 <br /> <br />1 <br />1 <br /> <br />1 <br />12.1 Instrument Calibration <br />Instruments should be calibrated according to their manufacturer's <br />instructions and the method specifications. General guidelines are listed <br />below. <br />General Guidelines <br />In general, a minimum of three standards at different concentrations and a <br />blank should be used for most initial calibrations arhd standard lines. <br />However, some instruments require asingle-point caligration and certain <br />methods require that additional standards be used. Reference the specific <br />method for calibration requirements. <br />The initial calibration should be verified by a reference standard and a <br />calibration blank before analyzing samples. <br />Continuing calibration is verified according to the applicable method <br />Guidelines are provided in sections 13.2 and 13.3. <br />12.2 Instrument Maintenance and Repair <br />Routine instrument maintenance shall be performed according to the <br />manufacturer's specifications only by a person who is familiar with the <br />instrument. <br />Instrument repair should be done only by qualified personnel or a <br />manufacturer representative. <br />When required, maintenance and repair contracts shall bey used for specific <br />instrumentation . <br />All maintenance and repair events should be documented in a maintenance log <br />for each instrument. <br />12.3 Analytical Method Requirements <br /> <br />