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April 19, 2016 Lab ID : STK1633239 <br /> Avanti Nut Co. Customer : 3-16179 <br /> Quality Control - Inorganic <br /> F <br /> :Method Blank-Prepared to verify that the preparation process is not contributing contamination to the samples. <br /> :Laboratory Control Standard/Sample-Prepared to verify that the preparation process is not affecting analyte recovery. <br /> :Matrix Spikes-A random sample is spiked with a known amount of analyte.The recoveries are an indication of how that sample <br /> atrix affects analyte recovery. <br /> Matrix Spike Duplicate of MS/MSU pair-A random sampleduplicate is spiked with a known amount of analyzed.The recoveries <br /> re an indication of how thatsample matrix affects analyte recovery. <br /> Blank Spikes-A blank is spiked with a known amount ofanalyte.It is prepared to verify that the preparation process is not <br /> ffecting analyte recovery. <br /> Blank Spike Duplicate of BS/BSD pair-A blank duplicate is spiked with a known amount ofanalyte.It is prepared to verify that <br /> he preparation process is not affecting analyte recovery. <br /> Duplicate Sample-A random sample with each batch is prepared and analyzed in duplicate.The relative percent difference is an <br /> ndication of precision for the preparation and analysis. <br /> MS/MSD Relative Percent Difference(RPD)-The MS relative percent difference is an indication ofprecision forthepreparation <br /> nd analysis. <br /> BS/BSD Relative Percent Difference(RPD)-The BS relative percent difference is an indication of precision for the preparation <br /> nd analysis. <br /> ND :Non-detect-Result was below the DQO listed for the analyte. <br /> <'A :High Sample Background-Spike concentration was less than one forth of the sample concentration. <br /> Data Quality Objective-This is the criteria against which the quali!y control data is compared. <br /> r <br /> t <br /> Page 23 of 24 <br /> 1 <br />