Laserfiche WebLink
�4W <br /> Sherwood <br /> 8071 NORTH LANDER AVENUE <br /> LabsP.O. BOX 937 <br /> C O R P O R A T t 0 N HILMAR,CALIFORNIA 95324 <br /> QUALITY CONTROL PROGRAM <br /> INTRODUCTION <br /> Sherwood-Labs has Implemented programs to insure that the quality <br /> of analytical data produced for clients is valid and verific':le. <br /> Strict adherence to the elements of this program provides the <br /> framework that is essential for those monitoring procedures that <br /> assess data for meeting the precision and accuracy requirements of <br /> the laboratory. <br /> "Thp program is based on a continuing process of testing and review. <br /> After camDleting the steps contained 11' the method validation <br /> sequence each method parameter is continuously monitored. reviewed <br /> and compared as part of thn evaluation program. <br /> Included in this document is a description of those elements and <br /> procedures that have been incorporated into Sherwood Labs OC <br /> program to provide the checks necessary for review and evaluation <br /> of data ouality. <br /> METHOD VALIDATION <br /> Method validation Is the first step in the process of continuing <br /> evaluation and review. The following factors are the focus of the <br /> initial validation process for a method: <br /> i . Review of all pertinent data related to the method an <br /> demonstration of understanding by all personnel involved in the <br /> analytical process. <br /> 2. oualification of reagent/solvents source selected for used in <br /> the method for Interferences. quenching affects, and/or <br /> unexpected side reactions. <br /> 3. Evaluation of extraction and clean-up methods. <br /> 4. Determine response factors for all analytes of interest at given <br /> instrument calibration settings to determine if desired <br /> detection limits can be achieved and adequate linearity for the <br /> selected range of calibration standards. <br /> 5. Calculate recoveries of spiked samples to determine if they are <br /> within range of stated method or laboratory limits. <br /> - <br /> 6. Evaluation of repeatability studies for standards and spike -- -- <br /> V samples. <br /> FAX: 667.2581 . BBS:(209)567-4119 <br /> OFFICE:(209)&67.5258 • .-,--•-�-•.,•- !t t ;�4• <br /> i <br />