BQS Organic Blind Sample Program
False Positives & False Negatives
4-N-OCTYLPHENOL
Method: 4433 Testid: 62809GCM99

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The SGPlot Procedure

Updated 08/31/2015

False Positive & Negative Listing for 4-N-OCTYLPHENOL

Status Lab ID Spike Mix Reporting Level Analysis Date Result Conc. Expected Conc.
False Negative 20140030013 Spex Organics T1130419010: 50 µl & Crescent 04CC095: 50 µl 0.02 02/05/14 < 0.02 0.09
  20140370076 NSI 042213WWUF: 20 µl & Crescent 04CC095: 20 µl 0.02 04/23/14 < 0.02 0.036
  20140930054 Spex Organics T1130419010: 20 µl & Supelco LC00152: 20 µl 0.02 04/24/14 < 0.02 0.036
  20141010007 Supelco LC06436: 30 µl & Crescent 03DD005: 30 µl 0.02 04/24/14 < 0.02 0.04005
  20141360095 Supelco LC06436: 60 µl & Spex Organics E1140402006: 60 µl 0.02 06/04/14 < 0.023 0.0801
  20141640077 Supelco LC06436: 30 µl & ChemService 2616300: 30 µl 0.02 07/09/14 < 0.036 0.04005
  20142130131 ERA 0227-14-07.1: 30 µl & Spex Organics E1140402006: 30 µl 0.02 08/21/14 < 0.02 0.0396
  20143300047 ERA 0227-14-07.1: 60 µl & ChemService 2616300: 60 µl 0.02 12/04/14 < 0.041 0.0792
False Positive 20111540005 Supelco LB77171: 80 µl 0.02 06/29/11 E 0.04 0

Updated 08/31/2015