BQS OBSP Determination:
ISOPROPYLBENZENE (CUMENE)
METHOD: 4054 , TESTIDCODE: 77223GCM66
DATES: 02/23/00 - 11/15/00

 Expected Conc. = 0.5 
 Median Pct Recovery = 105%  Expected Conc. = 0.5 
 Median Pct Recovery = 105%  Expected Conc. = 0.5 
 Median Pct Recovery = 105%  Expected Conc. = 0.28 
 Median Pct Recovery = 105%  Expected Conc. = 0.28 
 Median Pct Recovery = 105%  Expected Conc. = 0.28 
 Median Pct Recovery = 105%  Expected Conc. = 0.28 
 Median Pct Recovery = 105%  Expected Conc. = 0.28 
 Median Pct Recovery = 105%  Expected Conc. = 0.28 
 Median Pct Recovery = 105%  Expected Conc. = 0.27 
 Median Pct Recovery = 105%  Expected Conc. = 0.27 
 Median Pct Recovery = 105%  Expected Conc. = 0.27 
 Median Pct Recovery = 105%  Expected Conc. = 0.27 
 Median Pct Recovery = 105%  Expected Conc. = 0.27 
 Median Pct Recovery = 105%  Expected Conc. = 0.27 
 Median Pct Recovery = 105%  Expected Conc. = 0.0167 
 Median Pct Recovery = 105%  Expected Conc. = 0.0167 
 Median Pct Recovery = 105%  Expected Conc. = 0.0167 
 Median Pct Recovery = 105%  Expected Conc. = 0.0167 
 Median Pct Recovery = 105%  Expected Conc. = 0.0167 
 Median Pct Recovery = 105%  Expected Conc. = 0.0167 
 Median Pct Recovery = 105%  Expected Conc. = 0.0033 
 Median Pct Recovery = 105%  Expected Conc. = 0.0033 
 Median Pct Recovery = 105%  Expected Conc. = 0.0033 
 Median Pct Recovery = 105%  Analysis Date = 11/15/00 
 SpikeMix = NSI 053100-01: 25 µl 
 Pct Recovery = 106%  Analysis Date = 08/16/00 
 SpikeMix = NSI 053100-01: 25 µl 
 Pct Recovery = 88%  Analysis Date = 06/15/00 
 SpikeMix = NSI 121699: 20 µl 
 Pct Recovery = 112%  Analysis Date = 04/27/00 
 SpikeMix = NSI 121699: 20 µl 
 Pct Recovery = 103%  Analysis Date = 02/23/00 
 SpikeMix = NSI 121699: 20 µl 
 Pct Recovery = 100%  Analysis Date = 10/04/00 
 SpikeMix = Restek 57150: 30 µl 
 Pct Recovery = 103%  Analysis Date = 07/25/00 
 SpikeMix = Restek 57150: 30 µl 
 Pct Recovery = 107%  Analysis Date = 03/23/00 
 SpikeMix = Restek 57150: 30 µl 
 Pct Recovery = 106%  Median Pct Recovery = 105%  Median Pct Recovery = 105%  Median Pct Recovery = 105%  Median Pct Recovery = 105%  Median Pct Recovery = 105%  Median Pct Recovery = 105%  Median Pct Recovery = 105%  Median Pct Recovery = 105%  Median Pct Recovery = 105%  Median Pct Recovery = 105%  Median Pct Recovery = 105%  Median Pct Recovery = 105%  Median Pct Recovery = 105%  Median Pct Recovery = 105%  Median Pct Recovery = 105%  Median Pct Recovery = 105%  Median Pct Recovery = 105%  Median Pct Recovery = 105%  Median Pct Recovery = 105%  Median Pct Recovery = 105%  Median Pct Recovery = 105%  Median Pct Recovery = 105%  Median Pct Recovery = 105%  Median Pct Recovery = 105%  Median Pct Recovery = 105%  Median Pct Recovery = 105%  Median Pct Recovery = 105%  Median Pct Recovery = 105%  Median Pct Recovery = 105%  Median Pct Recovery = 105%  Median Pct Recovery = 105%  Median Pct Recovery = 105%  Median Pct Recovery = 105%  Median Pct Recovery = 105%  Median Pct Recovery = 105%  Median Pct Recovery = 105%  Y = 1
The SGPlot Procedure