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��w �>_".�u}�V <br /> .f:. <br /> tisS'4'�aw,:;.��.7�Ka – �-•=��-.,V= ...,..� =. s.� - —_.., .����r��.-.n�. tw.,�-/_ NidMS:J.`>�F".' <br /> f <br /> BROWN AND LDWELL ANALYTICAL kBO A ORIES <br /> BATCH'! QC REPORT <br /> Definitions and Terms <br /> - <br /> AccuraW. The ability of a ire to dewimine the°true"concentration of an <br /> analyte. <br /> wBatch: A group of samples aualYzcd sequentially using the calibraticm curve, <br /> reagents,and instrument. <br /> Ubc:tatary Control Larry reagent water spaced �vAth know end subjected <br /> Standard(lam: to the same procedures as the samples. The LCS thus indicates the a=uvcy <br /> of the analytical method and,because it is premed from a different source <br /> than the standard used to calih-ate the instrument;it 8150 serves to double <br /> - <br /> check the c alibratiom <br /> LC Result: laboratory result of an LCS anatysis. <br /> � <br /> LT Reeult: d result,or true value,of the LCS analysis. <br /> control tests petforotedMatron actual Client samples. for most aaorgamic <br /> . � ani awl ,the labmtorY uses a�of daPlimte and a spiksd <br /> sample. For most organic analyses,the laboratory uses a pair of sp1 <br /> r te_ samples(duplicate s}skes). <br /> The of analyte recMered. <br /> parcent Recovery: P calculation is <br /> FCC LCS,the percent <br /> recvvery <br /> LC-LT x 100. <br /> For spike recoveries,the percent recovery�ailaiiion is <br /> dS Bar- x 100 <br /> f � <br /> Spike Amount <br /> The uct'Y of a procedure demonstrated by the agnoement <br /> between <br /> PrecisiOn analyses perfamedon either duplicates of the same sample or a pair of <br /> duplicate mss, <br /> III,R2 Result: Result of the analysis of replicate <br /> aliquots of a sample,with <br /> R <br /> the fffd m lalyds of the sample and R2 its corresponding <br /> determine precision. <br /> Relative Percent <br /> Calculated using one of the foilowing: <br /> Difference(RPD): [RI -R21 x 100 (sl -S2}�ofl <br /> r <br /> (Rl +R2)-2 (S1+S2)-2 <br /> g far ResultThe average of spfe analysis result. <br /> ---------sl,-S2 Result:__.__-- ----Resit of the analysis of replicate spiked aliquots,with 51 indicating one <br /> ------- used to determine p ------------------- <br /> t.., spa'ke of the sample and S2 the second spiked ------ <br /> 3 and accuracy. <br /> The theoretical,or expected,result of a splice sample mmlya <br /> True value: �s. <br />