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: - •. - -�zti��.. e - S7m'�aY� r�ER/sois�3fl:rx"a � a'2&x'w tiR�w.wu'�'ii:, ���L �-�+�i <br /> • <br /> r.. <br /> SROWN AND CALDWELL ANALYTICAL LABORATORIES <br /> BATCH QC REPOWr <br /> 7 Demotions and Terms <br /> Aomrac3r Me ability of a pmcedfrre to determine the-true`conmMUution of an <br /> eaalyte. <br /> Batch: A group of samples analyzed sequendgy using the same calibration curve, <br /> reagents,and inert <br /> Laboratory` laboratory reagent water spdcecl with kmwa <br /> Standard( to the sena:fires as the cow and subjected <br /> ) <br /> semapk*. The LCS thus indicatrs the <br /> than the dard used calibrate etlr thais n um�t:a?so wrvestodou <br /> check the calhwim <br /> k <br /> LC Result: l.abmutcxy result of an LCS anatysis. <br /> LT Result led result,or true value,of the LCS analysis. <br /> matrix QC= QuaRty control tests performed on actual client samples. For most inorganic <br /> f analyses,the laboratory uses a pant of dupessamp1w and a spiked <br /> sample. For most mVnic analyses,the laboratory uses a pair of sp&d <br /> { �...' samples(duplicate spikes). <br /> Nroent ReCOV=y: The perwntage of analyto riecov n& <br /> For LCS,the percent.recovery calculstron is <br /> LC_LT x 100. <br /> For spike recoveries,the percent rewvery calm action is <br /> W x 100 <br /> Spike Amount <br /> prey sin: the rgmWucMy of a procedure demonstrated by the <br /> anabses PmfMMW on either duplicates of the Same sal <br /> duplicate spikes <br /> R1,R2 Result Result of the analysis of replicate aliquots of a sample,with R1 indicating <br /> efust m alyMs of the sampne and R2 its corresponding duplicate;used to <br /> wrmine preciaic rL <br /> Relative Percent Calculated udng one of the fouowing; <br /> ISl -S2)x 100 <br /> —{R1 <br /> +R2) 2 -----------(Sl-+S2)+2 <br /> S Bar Result The average of spike analysis results. <br /> Si, S2 Result Reeult of the analysis of replicate spiked aliquots,with st indicaUag orae <br /> spk a of the sample and S2 the second Bob;used to determine p vdsBon <br /> and ccaraq. <br /> Trus value: The tlteoretkal,or e <br /> xpecWd,result of a spike sample analysis. <br /> -- 1J C.IrralrfirrrJ <br /> long Room <br />