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M-1-M-4 <br /> M M Ell "A ,z <br /> M,MME, MM1111, <br /> I <br /> 6 <br /> Laboratory Analytical Quality Assurance <br /> In addition to routine calibration of the instruments with standards and blanks, the <br /> analyst is required to run duplicate and spikes on 10 percent of the analyses to ensure an <br /> added measure of precision and accuracy. Accuracy is also verired through the following: <br /> 1. Certification by the California Department of Health Services. <br /> 2. Participation in interlaboratory or round-robin programs. <br /> 3. "Blind" samples are submitted by the laboratory's quality assurance officer on a <br /> weekly basis. These are prepared from National Bureau of Standards or EPA <br /> reference standards. <br /> r i <br /> i <br /> i <br /> r{1 <br /> i <br /> _ f _ - - <br />