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a <br /> ShOrWood <br /> Labs <br /> C C R P D R A T ! O N 8071 NORTH LANDER AVENUE <br /> P.D.BOX 937 <br /> HILMAR,CALIFORNIA 95324 <br /> QUALITY CONTROL PROGRAM <br /> INTRODUCTION <br /> - <br /> SherwoodLabs has implemented programs to insure that the quality <br /> Of analytical data produced for Clients is valid and verifiable. <br /> Strict adherence to the elements of this <br /> framework that is essential for those monitor�n ram provides the <br /> assess data for meeting the precision and accuracy prequeidrementshof <br /> the laboratory. <br /> 'The program is based on a continuing process of testing and review. <br /> After completing the steps contained in the method validation <br /> sequences each method parameter is continkously monitored, reviewed <br /> and compared as part of the evaluation program. <br /> Included in this document is a description of those elements and <br /> procedures that have been incorporated into. Sherwood Labs. QC <br /> program to provide the checks necessary for review; and evaluation <br /> of data auality. <br /> METHOD VALIDATION <br /> ----------------- <br /> Method <br /> ----- ---------Method Validation is the first step in the <br /> process <br /> evaluation and review. The following factors are theofocustOf uthe <br /> initial validation process for a method- <br /> 1 . Review .af ail !� <br /> pertinent data related to the method and <br /> demonstration of understanding by all personnel involved in the <br /> M enalytical process. <br /> i <br /> 2. Qualification of reagent/solvents source selected for used in <br /> the method for interferences, quenching affects, <br /> unexpected side reactior <br /> ns. and/or <br /> i <br /> t <br /> d 3. Evaluation of extraction and Clean-up methods. <br /> IV 4. Determine response factors for all analytes of interest at given <br /> instrument calibration settings to determine if desired <br /> i detection limits can be achieved and adequate linearity for the <br /> selected range of calibration standards. <br /> - l- , - -- --5----Calculate recoveries of spiked samples to determine if t <br /> I within range of stated method or laboratory limits. <br /> t�e Y are <br /> 6. Evaluation of repeatability studies for standards and spiked k <br /> samples. l <br /> j OFFICE:(209)667-5258 • FAX:(209)667.2581 a 9BS:(M)667.4119 <br /> r <br /> t <br /> r A. - <br />