BQS Organic Blind Sample Program
False Positives & False Negatives
DICHLOROMETHANE
Method: 2021 Testid: 34423GCM66

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The SGPlot Procedure

Updated 08/31/2015

False Positive & Negative Listing for DICHLOROMETHANE

Status Lab ID Spike Mix Reporting Level Analysis Date Result Conc. Expected Conc.
False Positive 20091620168 Ultra CE-2869: 40 µl 0.04 06/17/09 E 0.02 0
  20091770124 Ultra CE-2869: 40 µl 0.04 06/30/09 E 0.02 0
  20092180176 Ultra CE-2869: 20 µl 0.04 08/11/09 E 0.01 0
  20093380012 NSI 090909-01VOC: 30 µl 0.038 12/11/09 E 0.0177 0
  20093560038 Accu 209081198: 30 µl 0.038 12/24/09 . 0.171 0
  20100420058 Accu 209081198: 10 µl 0.038 02/19/10 E 0.0321 0
  20100810066 Accu 209081198: 30 µl 0.038 03/26/10 E 0.0406 0
  20102180086 Restek A069860: 30 µl 0.038 08/11/10 E 0.0256 0
  20102250095 NSI 090909-01VOC: 30 µl 0.038 08/14/10 E 0.0211 0
  20102390264 Accu 209081198: 10 µl 0.038 09/01/10 E 0.0141 0
  20102500044 Abs 090809: 30 µl 0.038 09/08/10 E 0.0113 0
  20111680038 Crescent 06MM148: 20 µl 0.04 06/18/11 . 0.0587 0
  20132560004 Supelco LC00154: 20 µl & ChemService 1530700: 20 µl 0.04 09/17/13 . 0.045 0
  20132980025 Accu 213041120: 20 µl & ChemService 1530700: 20 µl 0.04 11/01/13 . 0.0448 0
  20140230083 Supelco LC00154: 20 µl & ChemService 1530700: 20 µl 0.04 01/29/14 . 0.0424 0

Updated 08/31/2015