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September 8, 2008 Lab ID : STK0838697 <br /> Neil Anderson & Associates Customer : 3-9574 <br /> Quality Control - Inorganic <br /> Constituent Method Date/ID Type Units Cone. QC Data DQO Note <br /> Vet Chem <br /> Nitrate+Nitrite as N 450ONO3F 08/29/2008:208749 MS mg/L 4.000 98.5% 5-285 <br /> (CH 0877571-002) MSD mg/L 4.000 95.4% 5-285 <br /> MSRPD m 4.000 1.8% <30.4 <br /> 450ONO3F 08/29/2008:210354 CCB mg/1 -0.028 0.1 <br /> CCV mg/1 4.000 91.8% 90-110 <br /> CCB mg/1 -0.022 0.1 <br /> CCV m 4.000 95.8% 90-110 <br /> Definition <br /> CCV Continuing Calibration Verification-Analyzed to verify the instrument calibration is within criteria. <br /> CCB :Continuing Calibration Blank-Analyzed to verify the instrument baseline is within criteria. <br /> MS :Matrix Spikes-A random sample is spiked with a known amount of analyte.The recoveries are an indication of how that sample <br /> matrix 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 <br /> are an 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 <br /> and analysis. <br /> D 0 :Data Quality Objective-This is the criteria against which the quality control data is compared. <br />