BQS Organic Blind Sample Program
False Positives & False Negatives
2,4-D METHYL ESTER
Method: 2060 Testid: 50470LCM29

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The SGPlot Procedure

Updated 08/31/2015

False Positive & Negative Listing for 2,4-D METHYL ESTER

Status Lab ID Spike Mix Reporting Level Analysis Date Result Conc. Expected Conc.
False Negative 20133470007 Spex Organics T1130601011: 20 µl & ChemService 1448600: 20 µl & NSI 050613: 20 µ 0.2 01/16/14 < 0.2 0.35
  20133580037 Abs 042513: 20 µl & Supelco LC01386: 20 µl & NSI 050613: 20 µl 0.2 01/16/14 < 0.2 0.352
  20140930050 Spex Organics T1130601011: 20 µl & Accu 213041030: 20 µl 0.2 04/24/14 < 0.2 0.35
False Positive 20101720152 NSI 090309-01HPLC: 80 µl 0.2 07/01/10 E 0.04 0
  20101830111 NWQL LCL11SP079A: 50 µl & NWQL LCL11SP079B: 50 µl 0.2 07/27/10 E 0.005 0

Updated 08/31/2015