Laserfiche WebLink
December 27 , 2022 <br /> SKS Enterprises Lab No . : STK2256517 <br /> Customer No . : 3013071 <br /> Quality Control - Metals <br /> 111 � <br /> MSRPD mg/kg 200 .0 1 . 5%% < 20 <br /> PDS mg/kg 40 . 00 131 % 75425 430 <br /> Definition <br /> Blank : Method Blank - Prepared to verify that the preparation process is not contributing contamination to the samples . <br /> DQO : Data Quality Objective - This is the criteria against which the quality control data is compared. <br /> LCS : Laboratory Control Standard/Sample m Prepared to verify that the preparation process is not affecting analyte recovery. <br /> MS : Matrix Spikes - A random sample is spiked with a known amount of analyte. The recoveries are an indication of how that sample matrix <br /> affects analyte recovery. <br /> MSD : Matrix Spike Duplicate of MS/MSD pair - A random sample duplicate is spiked with a known amount of analyted. The recoveries are an <br /> indication of how that sample matrix affects analyte recovery. <br /> MSRPD ; MS/MSD Relative Percent Difference (RPD) - The MS relative percent difference is an indication of precision for the preparation and <br /> analysis . <br /> ND ; Non-detect = Result was below the DQO listed for the analyte. <br /> PDS : PDS failed, matrix - Post Digestion Spike (PDS) not within Acceptance Range (AR) because of matrix interferences affecting this analyte. <br /> Data was accepted based on the LCS recovery. <br /> Explanation <br /> 430 Post Digestion Spike (PDS) not within Acceptance Range (AR) because of matrix interferences affecting this analyte. Data was accepted <br /> based on the LCS recovery. <br /> 435 : Sample matrix may be affecting this analyte. Data was accepted based on the LCS or CCV recovery. <br /> Page 4 of 4 Page 4 of 4 <br />