BQS Organic Blind Sample Program
Analytes by Multiple Methods
METOPROLOL

 Pct Recovery = 61% 
 Schedule Code = 2440  Pct Recovery = 78% 
 Schedule Code = 2440  Pct Recovery = 79% 
 Schedule Code = 2440  Pct Recovery = 82% 
 Schedule Code = 2440  Pct Recovery = 82% 
 Schedule Code = 2440  Pct Recovery = 83% 
 Schedule Code = 2440  Pct Recovery = 87% 
 Schedule Code = 2440  Pct Recovery = 87% 
 Schedule Code = 2440  Pct Recovery = 88% 
 Schedule Code = 2440  Pct Recovery = 91% 
 Schedule Code = 2440  Pct Recovery = 93% 
 Schedule Code = 2440  Pct Recovery = 95% 
 Schedule Code = 2440  Pct Recovery = 98% 
 Schedule Code = 2440  Pct Recovery = 101% 
 Schedule Code = 2440  Pct Recovery = 110% 
 Schedule Code = 2440  Pct Recovery = 111% 
 Schedule Code = 2440  Schedule Code = LC9017 
 Minimum Whisker = 24% 
 First Quartile = 32% 
 Median = 35% 
 Third Quartile = 39% 
 Maximum Whisker = 44% 
 Mean = 35% 
 Standard Deviation = 5% 
 Number of Observations = 16  Schedule Code = LC9017 
 Minimum Whisker = 24% 
 First Quartile = 32% 
 Median = 35% 
 Third Quartile = 39% 
 Maximum Whisker = 44% 
 Mean = 35% 
 Standard Deviation = 5% 
 Number of Observations = 16  Schedule Code = LC9017 
 Minimum Whisker = 24% 
 First Quartile = 32% 
 Median = 35% 
 Third Quartile = 39% 
 Maximum Whisker = 44% 
 Mean = 35% 
 Standard Deviation = 5% 
 Number of Observations = 16  Schedule Code = LC9017 
 Minimum Whisker = 24% 
 First Quartile = 32% 
 Median = 35% 
 Third Quartile = 39% 
 Maximum Whisker = 44% 
 Mean = 35% 
 Standard Deviation = 5% 
 Number of Observations = 16  Schedule Code = LC9017 
 Minimum Whisker = 24% 
 First Quartile = 32% 
 Median = 35% 
 Third Quartile = 39% 
 Maximum Whisker = 44% 
 Mean = 35% 
 Standard Deviation = 5% 
 Number of Observations = 16  Schedule Code = LC9017 
 Minimum Whisker = 24% 
 First Quartile = 32% 
 Median = 35% 
 Third Quartile = 39% 
 Maximum Whisker = 44% 
 Mean = 35% 
 Standard Deviation = 5% 
 Number of Observations = 16  Schedule Code = LC9017 
 Minimum Whisker = 24% 
 First Quartile = 32% 
 Median = 35% 
 Third Quartile = 39% 
 Maximum Whisker = 44% 
 Mean = 35% 
 Standard Deviation = 5% 
 Number of Observations = 16  Schedule Code = LC9017 
 Minimum Whisker = 24% 
 First Quartile = 32% 
 Median = 35% 
 Third Quartile = 39% 
 Maximum Whisker = 44% 
 Mean = 35% 
 Standard Deviation = 5% 
 Number of Observations = 16  Schedule Code = LC9017 
 Minimum Whisker = 24% 
 First Quartile = 32% 
 Median = 35% 
 Third Quartile = 39% 
 Maximum Whisker = 44% 
 Mean = 35% 
 Standard Deviation = 5% 
 Number of Observations = 16  Schedule Code = LC9017 
 Minimum Whisker = 24% 
 First Quartile = 32% 
 Median = 35% 
 Third Quartile = 39% 
 Maximum Whisker = 44% 
 Mean = 35% 
 Standard Deviation = 5% 
 Number of Observations = 16  Schedule Code = 2440 
 Minimum Whisker = 25% 
 First Quartile = 34% 
 Median = 37% 
 Third Quartile = 42% 
 Maximum Whisker = 48% 
 Mean = 44% 
 Standard Deviation = 20% 
 Number of Observations = 103  Schedule Code = 2440 
 Minimum Whisker = 25% 
 First Quartile = 34% 
 Median = 37% 
 Third Quartile = 42% 
 Maximum Whisker = 48% 
 Mean = 44% 
 Standard Deviation = 20% 
 Number of Observations = 103  Schedule Code = 2440 
 Minimum Whisker = 25% 
 First Quartile = 34% 
 Median = 37% 
 Third Quartile = 42% 
 Maximum Whisker = 48% 
 Mean = 44% 
 Standard Deviation = 20% 
 Number of Observations = 103  Schedule Code = 2440 
 Minimum Whisker = 25% 
 First Quartile = 34% 
 Median = 37% 
 Third Quartile = 42% 
 Maximum Whisker = 48% 
 Mean = 44% 
 Standard Deviation = 20% 
 Number of Observations = 103  Schedule Code = 2440 
 Minimum Whisker = 25% 
 First Quartile = 34% 
 Median = 37% 
 Third Quartile = 42% 
 Maximum Whisker = 48% 
 Mean = 44% 
 Standard Deviation = 20% 
 Number of Observations = 103  Schedule Code = 2440 
 Minimum Whisker = 25% 
 First Quartile = 34% 
 Median = 37% 
 Third Quartile = 42% 
 Maximum Whisker = 48% 
 Mean = 44% 
 Standard Deviation = 20% 
 Number of Observations = 103  Schedule Code = 2440 
 Minimum Whisker = 25% 
 First Quartile = 34% 
 Median = 37% 
 Third Quartile = 42% 
 Maximum Whisker = 48% 
 Mean = 44% 
 Standard Deviation = 20% 
 Number of Observations = 103  Schedule Code = 2440 
 Minimum Whisker = 25% 
 First Quartile = 34% 
 Median = 37% 
 Third Quartile = 42% 
 Maximum Whisker = 48% 
 Mean = 44% 
 Standard Deviation = 20% 
 Number of Observations = 103  Schedule Code = 2440 
 Minimum Whisker = 25% 
 First Quartile = 34% 
 Median = 37% 
 Third Quartile = 42% 
 Maximum Whisker = 48% 
 Mean = 44% 
 Standard Deviation = 20% 
 Number of Observations = 103  Schedule Code = 2440 
 Minimum Whisker = 25% 
 First Quartile = 34% 
 Median = 37% 
 Third Quartile = 42% 
 Maximum Whisker = 48% 
 Mean = 44% 
 Standard Deviation = 20% 
 Number of Observations = 103  Y = 1
The SGPlot Procedure

BQS Organic Blind Sample Program
Analytes by Multiple Methods
METOPROLOL

 spikemix = Spex Organics T1120802015: 20 µl & ERA 0507-12-06.1: 20 µl 
 Expected Conc. = 56 
 Lab Value = 19.000 
 reportunit = ng/L  spikemix = Spex Organics T1120802015: 40 µl & ERA 0507-12-06.1: 40 µl 
 Expected Conc. = 112 
 Lab Value = 44.900 
 reportunit = ng/L  spikemix = ERA 0507-12-06.1: 40 µl 
 Expected Conc. = 112 
 Lab Value = 40.700 
 reportunit = ng/L  spikemix = ERA 0823-11-05.2: 20 µl & Abs 053112: 20 µl 
 Expected Conc. = 55 
 Lab Value = 16.500 
 reportunit = ng/L  spikemix = ERA 0823-11-05.2: 10 µl & Abs 053112: 10 µl 
 Expected Conc. = 27.5 
 Lab Value = 10.500 
 reportunit = ng/L  spikemix = ERA 0823-11-05.1: 20 µl & ERA 0507-12-06.1: 20 µl 
 Expected Conc. = 56 
 Lab Value = 19.200 
 reportunit = ng/L  spikemix = ERA 0823-11-05.1: 15 µl & Abs 053112: 15 µl 
 Expected Conc. = 41.25 
 Lab Value = 16.900 
 reportunit = ng/L  spikemix = ERA 0507-12-06.1: 20 µl & ERA 0507-12-06.2: 20 µl 
 Expected Conc. = 56 
 Lab Value = 18.500 
 reportunit = ng/L  spikemix = ERA 0507-12-06.1: 20 µl & ERA 0507-12-06.2: 20 µl 
 Expected Conc. = 56 
 Lab Value = 20.800 
 reportunit = ng/L  spikemix = ERA 0507-12-06.1: 15 µl & Abs 060112: 15 µl 
 Expected Conc. = 42 
 Lab Value = 10.200 
 reportunit = ng/L  spikemix = Abs 053112: 40 µl 
 Expected Conc. = 110 
 Lab Value = 34.800 
 reportunit = ng/L  spikemix = Abs 071112: 40 µl & ERA 0507-12-06.1: 40 µl 
 Expected Conc. = 112 
 Lab Value = 42.200 
 reportunit = ng/L  spikemix = Abs 071112: 20 µl & Abs 053112: 20 µl 
 Expected Conc. = 55 
 Lab Value = 17.300 
 reportunit = ng/L  spikemix = Abs 060112: 20 µl & ERA 0507-12-06.1: 20 µl 
 Expected Conc. = 56 
 Lab Value = 14.500 
 reportunit = ng/L  spikemix = Abs 053112: 20 µl & ERA 0507-12-06.2: 20 µl 
 Expected Conc. = 55 
 Lab Value = 21.700 
 reportunit = ng/L  spikemix = Abs 053112: 20 µl & Abs 060112: 20 µl 
 Expected Conc. = 55 
 Lab Value = 24.100 
 reportunit = ng/L  spikemix = ERA 06281704: 20 µl & ERA 06281702: 20 µl 
 Expected Conc. = 54.4 
 Lab Value = 50.700 
 reportunit = ng/L  spikemix = ERA 06281704: 50 µl & ERA 06281702: 50 µl 
 Expected Conc. = 136 
 Lab Value = 129.000 
 reportunit = ng/L  spikemix = ERA 06281704: 20 µl & Abs 072517Pharm1: 20 µl 
 Expected Conc. = 54 
 Lab Value = 52.900 
 reportunit = ng/L  spikemix = ERA 06281702: 80 µl & ERA 06281703: 80 µl 
 Expected Conc. = 217.6 
 Lab Value = 178.000 
 reportunit = ng/L  spikemix = ERA 06281702: 50 µl & ERA 06281703: 50 µl 
 Expected Conc. = 136 
 Lab Value = 106.000 
 reportunit = ng/L  spikemix = ERA 06281702: 20 µl & Abs 072517Pharm2: 20 µl 
 Expected Conc. = 54.4 
 Lab Value = 45.300 
 reportunit = ng/L  spikemix = ERA 04281604: 80 µl & ERA 04281603: 80 µl 
 Expected Conc. = 136.8 
 Lab Value = 52.600 
 reportunit = ng/L  spikemix = ERA 04281604: 40 µl & ERA 04281603: 40 µl 
 Expected Conc. = 68.4 
 Lab Value = 25.700 
 reportunit = ng/L  spikemix = ERA 04281604: 80 µl & ERA 04281603: 80 µl 
 Expected Conc. = 136.8 
 Lab Value = 48.800 
 reportunit = ng/L  spikemix = ERA 04281604: 40 µl & Abs 061516PHARM: 40 µl 
 Expected Conc. = 68.4 
 Lab Value = 53.700 
 reportunit = ng/L  spikemix = ERA 04281604: 40 µl & Abs 061516PHARM: 40 µl 
 Expected Conc. = 68.4 
 Lab Value = 41.800 
 reportunit = ng/L  spikemix = ERA 04281604: 40 µl & Abs 061516PHARM: 40 µl 
 Expected Conc. = 68.4 
 Lab Value = 31.800 
 reportunit = ng/L  spikemix = ERA 04281604: 40 µl & Abs 061516PHARM: 40 µl 
 Expected Conc. = 68.4 
 Lab Value = 32.900 
 reportunit = ng/L  spikemix = ERA 04281604: 40 µl & Abs 061516PHARM: 40 µl 
 Expected Conc. = 68.4 
 Lab Value = 28.000 
 reportunit = ng/L  spikemix = ERA 04281604: 40 µl & Abs 061516PHARM: 40 µl 
 Expected Conc. = 68.4 
 Lab Value = 26.100 
 reportunit = ng/L  spikemix = ERA 04281603: 40 µl & ERA 04281604: 40 µl 
 Expected Conc. = 68.4 
 Lab Value = 28.800 
 reportunit = ng/L  spikemix = ERA 04281603: 80 µl & ERA 04281604: 80 µl 
 Expected Conc. = 136.8 
 Lab Value = 47.000 
 reportunit = ng/L  spikemix = ERA 0406-15-08: 20 µl & ERA 0406-15-09: 20 µl 
 Expected Conc. = 41.2 
 Lab Value = 13.900 
 reportunit = ng/L  spikemix = ERA 0406-15-08: 40 µl & ERA 0406-15-09: 40 µl 
 Expected Conc. = 82.4 
 Lab Value = 31.400 
 reportunit = ng/L  spikemix = ERA 0406-15-08: 40 µl & Abs 052215: 40 µl 
 Expected Conc. = 82.4 
 Lab Value = 30.400 
 reportunit = ng/L  spikemix = ERA 0406-15-08: 80 µl & Abs 052215: 80 µl 
 Expected Conc. = 164.8 
 Lab Value = 61.300 
 reportunit = ng/L  spikemix = ERA 0406-15-08: 20 µl & Abs 052215: 20 µl 
 Expected Conc. = 41.2 
 Lab Value = 15.100 
 reportunit = ng/L  spikemix = ERA 0406-15-07A: 20 µl & ERA 0406-15-08: 20 µl 
 Expected Conc. = 41.2 
 Lab Value = 19.400 
 reportunit = ng/L  spikemix = ERA 0406-15-07A: 20 µl & ERA 0406-15-08: 20 µl 
 Expected Conc. = 41.2 
 Lab Value = 13.800 
 reportunit = ng/L  spikemix = ERA 0406-15-07A: 40 µl & ERA 0406-15-08: 40 µl 
 Expected Conc. = 82.4 
 Lab Value = 29.200 
 reportunit = ng/L  spikemix = ERA 0406-15-07A: 20 µl & ERA 0406-15-08: 20 µl 
 Expected Conc. = 41.2 
 Lab Value = 14.400 
 reportunit = ng/L  spikemix = ERA 0406-15-07A: 40 µl & Abs 051315: 40 µl 
 Expected Conc. = 82.84 
 Lab Value = 28.100 
 reportunit = ng/L  spikemix = ERA 0406-15-07A: 80 µl & Abs 051315: 80 µl 
 Expected Conc. = 165.68 
 Lab Value = 65.800 
 reportunit = ng/L  spikemix = ERA 0319-14-05: 15 µl & ERA 0318-14-02: 15 µl 
 Expected Conc. = 109.8 
 Lab Value = 50.400 
 reportunit = ng/L  spikemix = ERA 0319-14-05: 60 µl & ERA 0318-14-02: 60 µl 
 Expected Conc. = 109.8 
 Lab Value = 40.200 
 reportunit = ng/L  spikemix = ERA 0319-14-05: 15 µl & Abs 041614: 15 µl 
 Expected Conc. = 110.12 
 Lab Value = 48.800 
 reportunit = ng/L  spikemix = ERA 0319-14-05: 15 µl & Abs 041614: 15 µl 
 Expected Conc. = 110.12 
 Lab Value = 39.500 
 reportunit = ng/L  spikemix = ERA 0319-14-05: 8 µl & Abs 041614: 8 µl 
 Expected Conc. = 58.728 
 Lab Value = 22.900 
 reportunit = ng/L  spikemix = ERA 0318-14-02: 30 µl & ERA 0319-14-05: 30 µl 
 Expected Conc. = 54.9 
 Lab Value = 19.800 
 reportunit = ng/L  spikemix = ERA 0318-14-02: 8 µl & ERA 0319-14-04: 8 µl 
 Expected Conc. = 58.56 
 Lab Value = 19.700 
 reportunit = ng/L  spikemix = ERA 0318-14-02: 15 µl & ERA 0319-14-04: 15 µl 
 Expected Conc. = 109.8 
 Lab Value = 35.400 
 reportunit = ng/L  spikemix = ERA 0318-14-02: 60 µl & ERA 0319-14-04: 60 µl 
 Expected Conc. = 109.8 
 Lab Value = 33.100 
 reportunit = ng/L  spikemix = ERA 0318-14-02: 60 µl & Abs 041714: 60 µl 
 Expected Conc. = 109.8 
 Lab Value = 34.300 
 reportunit = ng/L  spikemix = ERA 0318-14-02: 30 µl & Abs 041714: 30 µl 
 Expected Conc. = 54.9 
 Lab Value = 16.700 
 reportunit = ng/L  spikemix = Crescent EN160610015: 40 µl & ERA 04281604: 40 µl 
 Expected Conc. = 68.4 
 Lab Value = 22.000 
 reportunit = ng/L  spikemix = Crescent EN160610015: 40 µl & ERA 04281604: 40 µl 
 Expected Conc. = 68.4 
 Lab Value = 27.700 
 reportunit = ng/L  spikemix = Crescent EN160610015: 40 µl & ERA 04281604: 40 µl 
 Expected Conc. = 68.4 
 Lab Value = 25.600 
 reportunit = ng/L  spikemix = Crescent EN160610015: 100 µl & ERA 04281604: 100 µl 
 Expected Conc. = 171 
 Lab Value = 61.200 
 reportunit = ng/L  spikemix = Crescent EN160610015: 100 µl & ERA 04281604: 100 µl 
 Expected Conc. = 171 
 Lab Value = 59.000 
 reportunit = ng/L  spikemix = Crescent EN160610015: 40 µl & Abs 061416: 40 µl 
 Expected Conc. = 68.4 
 Lab Value = 19.200 
 reportunit = ng/L  spikemix = Crescent EN160610015: 40 µl & Abs 061416: 40 µl 
 Expected Conc. = 68.4 
 Lab Value = 17.500 
 reportunit = ng/L  spikemix = Crescent EN160610015: 80 µl & Abs 061416: 80 µl 
 Expected Conc. = 136.8 
 Lab Value = 47.800 
 reportunit = ng/L  spikemix = Abs 072517Pharm1: 50 µl & ERA 06281703: 50 µl 
 Expected Conc. = 135 
 Lab Value = 136.000 
 reportunit = ng/L  spikemix = Abs 072517Pharm1: 80 µl & ERA 06281703: 80 µl 
 Expected Conc. = 216 
 Lab Value = 239.000 
 reportunit = ng/L  spikemix = Abs 072517Pharm1: 20 µl & Abs 072517Pharm2: 20 µl 
 Expected Conc. = 54 
 Lab Value = 47.200 
 reportunit = ng/L  spikemix = Abs 072517Pharm1: 50 µl & Abs 072517Pharm2: 50 µl 
 Expected Conc. = 135 
 Lab Value = 123.000 
 reportunit = ng/L  spikemix = Abs 072517Pharm1: 50 µl & Abs 071817Pharm: 50 µl 
 Expected Conc. = 135 
 Lab Value = 117.000 
 reportunit = ng/L  spikemix = Abs 071817Pharm: 20 µl & ERA 06281702: 20 µl 
 Expected Conc. = 54.4 
 Lab Value = 20.300 
 reportunit = ng/L  spikemix = Abs 071817Pharm: 50 µl & Abs 072517Pharm1: 50 µl 
 Expected Conc. = 135 
 Lab Value = 111.000 
 reportunit = ng/L  spikemix = Abs 071817Pharm: 80 µl & Abs 072517Pharm1: 80 µl 
 Expected Conc. = 216 
 Lab Value = 238.000 
 reportunit = ng/L  spikemix = Abs 061416: 40 µl & ERA 04281603: 40 µl 
 Expected Conc. = 68.4 
 Lab Value = 24.600 
 reportunit = ng/L  spikemix = Abs 061416: 100 µl & ERA 04281603: 100 µl 
 Expected Conc. = 171 
 Lab Value = 67.600 
 reportunit = ng/L  spikemix = Abs 061416: 100 µl & ERA 04281603: 100 µl 
 Expected Conc. = 171 
 Lab Value = 72.000 
 reportunit = ng/L  spikemix = Abs 061416: 40 µl & ERA 04281603: 40 µl 
 Expected Conc. = 68.4 
 Lab Value = 19.700 
 reportunit = ng/L  spikemix = Abs 061416: 40 µl & ERA 04281603: 40 µl 
 Expected Conc. = 68.4 
 Lab Value = 19.800 
 reportunit = ng/L  spikemix = Abs 061416: 80 µl & Crescent EN160610015: 80 µl 
 Expected Conc. = 136.8 
 Lab Value = 48.300 
 reportunit = ng/L  spikemix = Abs 061416: 40 µl & Abs 061516PHARM: 40 µl 
 Expected Conc. = 68.4 
 Lab Value = 17.700 
 reportunit = ng/L  spikemix = Abs 061416: 40 µl & Abs 061516PHARM: 40 µl 
 Expected Conc. = 68.4 
 Lab Value = 20.000 
 reportunit = ng/L  spikemix = Abs 061416: 80 µl & Abs 061516PHARM: 80 µl 
 Expected Conc. = 136.8 
 Lab Value = 59.800 
 reportunit = ng/L  spikemix = Abs 061416: 80 µl & Abs 061516PHARM: 80 µl 
 Expected Conc. = 136.8 
 Lab Value = 57.600 
 reportunit = ng/L  spikemix = Abs 061416: 80 µl & Abs 060916PHARM: 80 µl 
 Expected Conc. = 136.8 
 Lab Value = 53.400 
 reportunit = ng/L  spikemix = Abs 060916PHARM: 40 µl & ERA 04281604: 40 µl 
 Expected Conc. = 68.4 
 Lab Value = 24.200 
 reportunit = ng/L  spikemix = Abs 060916PHARM: 40 µl & ERA 04281604: 40 µl 
 Expected Conc. = 68.4 
 Lab Value = 26.000 
 reportunit = ng/L  spikemix = Abs 060916PHARM: 40 µl & ERA 04281604: 40 µl 
 Expected Conc. = 68.4 
 Lab Value = 23.300 
 reportunit = ng/L  spikemix = Abs 060916PHARM: 40 µl & ERA 04281604: 40 µl 
 Expected Conc. = 68.4 
 Lab Value = 23.200 
 reportunit = ng/L  spikemix = Abs 060916PHARM: 80 µl & Abs 061416: 80 µl 
 Expected Conc. = 136.8 
 Lab Value = 121.000 
 reportunit = ng/L  spikemix = Abs 060916PHARM: 80 µl & Abs 061416: 80 µl 
 Expected Conc. = 136.8 
 Lab Value = 52.000 
 reportunit = ng/L  spikemix = Abs 060916PHARM: 40 µl & Abs 061416: 40 µl 
 Expected Conc. = 68.4 
 Lab Value = 19.500 
 reportunit = ng/L  spikemix = Abs 060916PHARM: 40 µl & Abs 061416: 40 µl 
 Expected Conc. = 68.4 
 Lab Value = 20.200 
 reportunit = ng/L  spikemix = Abs 060916PHARM: 80 µl & Abs 061416: 80 µl 
 Expected Conc. = 136.8 
 Lab Value = 60.700 
 reportunit = ng/L  spikemix = Abs 060916PHARM: 80 µl & Abs 061416: 80 µl 
 Expected Conc. = 136.8 
 Lab Value = 58.000 
 reportunit = ng/L  spikemix = Abs 051315: 10 µl & ERA 0406-15-09: 10 µl 
 Expected Conc. = 20.71 
 Lab Value = 6.050 
 reportunit = ng/L  spikemix = Abs 051315: 10 µl & ERA 0406-15-09: 10 µl 
 Expected Conc. = 20.71 
 Lab Value = 7.310 
 reportunit = ng/L  spikemix = Abs 051315: 80 µl & ERA 0406-15-09: 80 µl 
 Expected Conc. = 165.68 
 Lab Value = 64.400 
 reportunit = ng/L  spikemix = Abs 051315: 80 µl & ERA 0406-15-09: 80 µl 
 Expected Conc. = 165.68 
 Lab Value = 58.900 
 reportunit = ng/L  spikemix = Abs 051315: 20 µl & Abs 052215: 20 µl 
 Expected Conc. = 41.42 
 Lab Value = 15.200 
 reportunit = ng/L  spikemix = Abs 051315: 40 µl & Abs 052215: 40 µl 
 Expected Conc. = 82.84 
 Lab Value = 24.600 
 reportunit = ng/L  spikemix = Abs 051315: 20 µl & Abs 052215: 20 µl 
 Expected Conc. = 41.42 
 Lab Value = 15.200 
 reportunit = ng/L  spikemix = Abs 050115: 40 µl & ERA 0406-15-08: 40 µl 
 Expected Conc. = 82.4 
 Lab Value = 29.000 
 reportunit = ng/L  spikemix = Abs 050115: 80 µl & ERA 0406-15-08: 80 µl 
 Expected Conc. = 164.8 
 Lab Value = 64.500 
 reportunit = ng/L  spikemix = Abs 050115: 20 µl & ERA 0406-15-08: 20 µl 
 Expected Conc. = 41.2 
 Lab Value = 14.700 
 reportunit = ng/L  spikemix = Abs 050115: 40 µl & Abs 051315: 40 µl 
 Expected Conc. = 82.84 
 Lab Value = 30.100 
 reportunit = ng/L  spikemix = Abs 050115: 40 µl & Abs 051315: 40 µl 
 Expected Conc. = 82.84 
 Lab Value = 25.800 
 reportunit = ng/L  spikemix = Abs 050115: 20 µl & Abs 051315: 20 µl 
 Expected Conc. = 41.42 
 Lab Value = 10.200 
 reportunit = ng/L  spikemix = Abs 050115: 40 µl & Abs 051315: 40 µl 
 Expected Conc. = 82.84 
 Lab Value = 30.400 
 reportunit = ng/L  spikemix = Abs 041814: 15 µl & ERA 0318-14-02: 15 µl 
 Expected Conc. = 109.8 
 Lab Value = 45.000 
 reportunit = ng/L  spikemix = Abs 041814: 8 µl & ERA 0318-14-02: 8 µl 
 Expected Conc. = 58.56 
 Lab Value = 20.600 
 reportunit = ng/L  spikemix = Abs 041814: 30 µl & ERA 0318-14-02: 30 µl 
 Expected Conc. = 54.9 
 Lab Value = 15.700 
 reportunit = ng/L  spikemix = Abs 041814: 30 µl & Abs 041614: 30 µl 
 Expected Conc. = 55.058 
 Lab Value = 16.000 
 reportunit = ng/L  spikemix = Abs 041814: 60 µl & Abs 041614: 60 µl 
 Expected Conc. = 110.12 
 Lab Value = 47.700 
 reportunit = ng/L  spikemix = Abs 041814: 30 µl & Abs 041614: 30 µl 
 Expected Conc. = 55.058 
 Lab Value = 19.800 
 reportunit = ng/L  spikemix = Abs 041614: 8 µl & ERA 0319-14-04: 8 µl 
 Expected Conc. = 58.728 
 Lab Value = 23.000 
 reportunit = ng/L  spikemix = Abs 041614: 8 µl & ERA 0319-14-04: 8 µl 
 Expected Conc. = 58.728 
 Lab Value = 24.500 
 reportunit = ng/L  spikemix = Abs 041614: 15 µl & ERA 0319-14-04: 15 µl 
 Expected Conc. = 110.12 
 Lab Value = 38.100 
 reportunit = ng/L  spikemix = Abs 041614: 30 µl & ERA 0319-14-04: 30 µl 
 Expected Conc. = 55.058 
 Lab Value = 16.700 
 reportunit = ng/L  spikemix = Abs 041614: 30 µl & Abs 041714: 30 µl 
 Expected Conc. = 55.058 
 Lab Value = 17.700 
 reportunit = ng/L  spikemix = Abs 041614: 60 µl & Abs 041714: 60 µl 
 Expected Conc. = 110.12 
 Lab Value = 37.900 
 reportunit = ng/L  spikemix = Abs 041614: 30 µl & Abs 041714: 30 µl 
 Expected Conc. = 55.058 
 Lab Value = 19.200 
 reportunit = ng/L  Y = 1
The SGPlot Procedure

BQS Organic Blind Sample Program
Analytes by Multiple Methods
METOPROLOL

 spikemix = Spex Organics T1120802015: 20 µl & ERA 0507-12-06.1: 20 µl 
 Expected Conc. = 56 
 Lab Value = 19.000 
 reportunit = ng/L  spikemix = Spex Organics T1120802015: 40 µl & ERA 0507-12-06.1: 40 µl 
 Expected Conc. = 112 
 Lab Value = 44.900 
 reportunit = ng/L  spikemix = ERA 0507-12-06.1: 40 µl 
 Expected Conc. = 112 
 Lab Value = 40.700 
 reportunit = ng/L  spikemix = ERA 0823-11-05.2: 20 µl & Abs 053112: 20 µl 
 Expected Conc. = 55 
 Lab Value = 16.500 
 reportunit = ng/L  spikemix = ERA 0823-11-05.2: 10 µl & Abs 053112: 10 µl 
 Expected Conc. = 27.5 
 Lab Value = 10.500 
 reportunit = ng/L  spikemix = ERA 0823-11-05.1: 20 µl & ERA 0507-12-06.1: 20 µl 
 Expected Conc. = 56 
 Lab Value = 19.200 
 reportunit = ng/L  spikemix = ERA 0823-11-05.1: 15 µl & Abs 053112: 15 µl 
 Expected Conc. = 41.25 
 Lab Value = 16.900 
 reportunit = ng/L  spikemix = ERA 0507-12-06.1: 20 µl & ERA 0507-12-06.2: 20 µl 
 Expected Conc. = 56 
 Lab Value = 18.500 
 reportunit = ng/L  spikemix = ERA 0507-12-06.1: 20 µl & ERA 0507-12-06.2: 20 µl 
 Expected Conc. = 56 
 Lab Value = 20.800 
 reportunit = ng/L  spikemix = ERA 0507-12-06.1: 15 µl & Abs 060112: 15 µl 
 Expected Conc. = 42 
 Lab Value = 10.200 
 reportunit = ng/L  spikemix = Abs 053112: 40 µl 
 Expected Conc. = 110 
 Lab Value = 34.800 
 reportunit = ng/L  spikemix = Abs 071112: 40 µl & ERA 0507-12-06.1: 40 µl 
 Expected Conc. = 112 
 Lab Value = 42.200 
 reportunit = ng/L  spikemix = Abs 071112: 20 µl & Abs 053112: 20 µl 
 Expected Conc. = 55 
 Lab Value = 17.300 
 reportunit = ng/L  spikemix = Abs 060112: 20 µl & ERA 0507-12-06.1: 20 µl 
 Expected Conc. = 56 
 Lab Value = 14.500 
 reportunit = ng/L  spikemix = Abs 053112: 20 µl & ERA 0507-12-06.2: 20 µl 
 Expected Conc. = 55 
 Lab Value = 21.700 
 reportunit = ng/L  spikemix = Abs 053112: 20 µl & Abs 060112: 20 µl 
 Expected Conc. = 55 
 Lab Value = 24.100 
 reportunit = ng/L  spikemix = ERA 06281704: 20 µl & ERA 06281702: 20 µl 
 Expected Conc. = 54.4 
 Lab Value = 50.700 
 reportunit = ng/L  spikemix = ERA 06281704: 50 µl & ERA 06281702: 50 µl 
 Expected Conc. = 136 
 Lab Value = 129.000 
 reportunit = ng/L  spikemix = ERA 06281704: 20 µl & Abs 072517Pharm1: 20 µl 
 Expected Conc. = 54 
 Lab Value = 52.900 
 reportunit = ng/L  spikemix = ERA 06281702: 80 µl & ERA 06281703: 80 µl 
 Expected Conc. = 217.6 
 Lab Value = 178.000 
 reportunit = ng/L  spikemix = ERA 06281702: 50 µl & ERA 06281703: 50 µl 
 Expected Conc. = 136 
 Lab Value = 106.000 
 reportunit = ng/L  spikemix = ERA 06281702: 20 µl & Abs 072517Pharm2: 20 µl 
 Expected Conc. = 54.4 
 Lab Value = 45.300 
 reportunit = ng/L  spikemix = ERA 04281604: 80 µl & ERA 04281603: 80 µl 
 Expected Conc. = 136.8 
 Lab Value = 52.600 
 reportunit = ng/L  spikemix = ERA 04281604: 40 µl & ERA 04281603: 40 µl 
 Expected Conc. = 68.4 
 Lab Value = 25.700 
 reportunit = ng/L  spikemix = ERA 04281604: 80 µl & ERA 04281603: 80 µl 
 Expected Conc. = 136.8 
 Lab Value = 48.800 
 reportunit = ng/L  spikemix = ERA 04281604: 40 µl & Abs 061516PHARM: 40 µl 
 Expected Conc. = 68.4 
 Lab Value = 53.700 
 reportunit = ng/L  spikemix = ERA 04281604: 40 µl & Abs 061516PHARM: 40 µl 
 Expected Conc. = 68.4 
 Lab Value = 41.800 
 reportunit = ng/L  spikemix = ERA 04281604: 40 µl & Abs 061516PHARM: 40 µl 
 Expected Conc. = 68.4 
 Lab Value = 31.800 
 reportunit = ng/L  spikemix = ERA 04281604: 40 µl & Abs 061516PHARM: 40 µl 
 Expected Conc. = 68.4 
 Lab Value = 32.900 
 reportunit = ng/L  spikemix = ERA 04281604: 40 µl & Abs 061516PHARM: 40 µl 
 Expected Conc. = 68.4 
 Lab Value = 28.000 
 reportunit = ng/L  spikemix = ERA 04281604: 40 µl & Abs 061516PHARM: 40 µl 
 Expected Conc. = 68.4 
 Lab Value = 26.100 
 reportunit = ng/L  spikemix = ERA 04281603: 40 µl & ERA 04281604: 40 µl 
 Expected Conc. = 68.4 
 Lab Value = 28.800 
 reportunit = ng/L  spikemix = ERA 04281603: 80 µl & ERA 04281604: 80 µl 
 Expected Conc. = 136.8 
 Lab Value = 47.000 
 reportunit = ng/L  spikemix = ERA 0406-15-08: 20 µl & ERA 0406-15-09: 20 µl 
 Expected Conc. = 41.2 
 Lab Value = 13.900 
 reportunit = ng/L  spikemix = ERA 0406-15-08: 40 µl & ERA 0406-15-09: 40 µl 
 Expected Conc. = 82.4 
 Lab Value = 31.400 
 reportunit = ng/L  spikemix = ERA 0406-15-08: 40 µl & Abs 052215: 40 µl 
 Expected Conc. = 82.4 
 Lab Value = 30.400 
 reportunit = ng/L  spikemix = ERA 0406-15-08: 80 µl & Abs 052215: 80 µl 
 Expected Conc. = 164.8 
 Lab Value = 61.300 
 reportunit = ng/L  spikemix = ERA 0406-15-08: 20 µl & Abs 052215: 20 µl 
 Expected Conc. = 41.2 
 Lab Value = 15.100 
 reportunit = ng/L  spikemix = ERA 0406-15-07A: 20 µl & ERA 0406-15-08: 20 µl 
 Expected Conc. = 41.2 
 Lab Value = 19.400 
 reportunit = ng/L  spikemix = ERA 0406-15-07A: 20 µl & ERA 0406-15-08: 20 µl 
 Expected Conc. = 41.2 
 Lab Value = 13.800 
 reportunit = ng/L  spikemix = ERA 0406-15-07A: 40 µl & ERA 0406-15-08: 40 µl 
 Expected Conc. = 82.4 
 Lab Value = 29.200 
 reportunit = ng/L  spikemix = ERA 0406-15-07A: 20 µl & ERA 0406-15-08: 20 µl 
 Expected Conc. = 41.2 
 Lab Value = 14.400 
 reportunit = ng/L  spikemix = ERA 0406-15-07A: 40 µl & Abs 051315: 40 µl 
 Expected Conc. = 82.84 
 Lab Value = 28.100 
 reportunit = ng/L  spikemix = ERA 0406-15-07A: 80 µl & Abs 051315: 80 µl 
 Expected Conc. = 165.68 
 Lab Value = 65.800 
 reportunit = ng/L  spikemix = ERA 0319-14-05: 15 µl & ERA 0318-14-02: 15 µl 
 Expected Conc. = 109.8 
 Lab Value = 50.400 
 reportunit = ng/L  spikemix = ERA 0319-14-05: 60 µl & ERA 0318-14-02: 60 µl 
 Expected Conc. = 109.8 
 Lab Value = 40.200 
 reportunit = ng/L  spikemix = ERA 0319-14-05: 15 µl & Abs 041614: 15 µl 
 Expected Conc. = 110.12 
 Lab Value = 48.800 
 reportunit = ng/L  spikemix = ERA 0319-14-05: 15 µl & Abs 041614: 15 µl 
 Expected Conc. = 110.12 
 Lab Value = 39.500 
 reportunit = ng/L  spikemix = ERA 0319-14-05: 8 µl & Abs 041614: 8 µl 
 Expected Conc. = 58.728 
 Lab Value = 22.900 
 reportunit = ng/L  spikemix = ERA 0318-14-02: 30 µl & ERA 0319-14-05: 30 µl 
 Expected Conc. = 54.9 
 Lab Value = 19.800 
 reportunit = ng/L  spikemix = ERA 0318-14-02: 8 µl & ERA 0319-14-04: 8 µl 
 Expected Conc. = 58.56 
 Lab Value = 19.700 
 reportunit = ng/L  spikemix = ERA 0318-14-02: 15 µl & ERA 0319-14-04: 15 µl 
 Expected Conc. = 109.8 
 Lab Value = 35.400 
 reportunit = ng/L  spikemix = ERA 0318-14-02: 60 µl & ERA 0319-14-04: 60 µl 
 Expected Conc. = 109.8 
 Lab Value = 33.100 
 reportunit = ng/L  spikemix = ERA 0318-14-02: 60 µl & Abs 041714: 60 µl 
 Expected Conc. = 109.8 
 Lab Value = 34.300 
 reportunit = ng/L  spikemix = ERA 0318-14-02: 30 µl & Abs 041714: 30 µl 
 Expected Conc. = 54.9 
 Lab Value = 16.700 
 reportunit = ng/L  spikemix = Crescent EN160610015: 40 µl & ERA 04281604: 40 µl 
 Expected Conc. = 68.4 
 Lab Value = 22.000 
 reportunit = ng/L  spikemix = Crescent EN160610015: 40 µl & ERA 04281604: 40 µl 
 Expected Conc. = 68.4 
 Lab Value = 27.700 
 reportunit = ng/L  spikemix = Crescent EN160610015: 40 µl & ERA 04281604: 40 µl 
 Expected Conc. = 68.4 
 Lab Value = 25.600 
 reportunit = ng/L  spikemix = Crescent EN160610015: 100 µl & ERA 04281604: 100 µl 
 Expected Conc. = 171 
 Lab Value = 61.200 
 reportunit = ng/L  spikemix = Crescent EN160610015: 100 µl & ERA 04281604: 100 µl 
 Expected Conc. = 171 
 Lab Value = 59.000 
 reportunit = ng/L  spikemix = Crescent EN160610015: 40 µl & Abs 061416: 40 µl 
 Expected Conc. = 68.4 
 Lab Value = 19.200 
 reportunit = ng/L  spikemix = Crescent EN160610015: 40 µl & Abs 061416: 40 µl 
 Expected Conc. = 68.4 
 Lab Value = 17.500 
 reportunit = ng/L  spikemix = Crescent EN160610015: 80 µl & Abs 061416: 80 µl 
 Expected Conc. = 136.8 
 Lab Value = 47.800 
 reportunit = ng/L  spikemix = Abs 072517Pharm1: 50 µl & ERA 06281703: 50 µl 
 Expected Conc. = 135 
 Lab Value = 136.000 
 reportunit = ng/L  spikemix = Abs 072517Pharm1: 80 µl & ERA 06281703: 80 µl 
 Expected Conc. = 216 
 Lab Value = 239.000 
 reportunit = ng/L  spikemix = Abs 072517Pharm1: 20 µl & Abs 072517Pharm2: 20 µl 
 Expected Conc. = 54 
 Lab Value = 47.200 
 reportunit = ng/L  spikemix = Abs 072517Pharm1: 50 µl & Abs 072517Pharm2: 50 µl 
 Expected Conc. = 135 
 Lab Value = 123.000 
 reportunit = ng/L  spikemix = Abs 072517Pharm1: 50 µl & Abs 071817Pharm: 50 µl 
 Expected Conc. = 135 
 Lab Value = 117.000 
 reportunit = ng/L  spikemix = Abs 071817Pharm: 20 µl & ERA 06281702: 20 µl 
 Expected Conc. = 54.4 
 Lab Value = 20.300 
 reportunit = ng/L  spikemix = Abs 071817Pharm: 50 µl & Abs 072517Pharm1: 50 µl 
 Expected Conc. = 135 
 Lab Value = 111.000 
 reportunit = ng/L  spikemix = Abs 071817Pharm: 80 µl & Abs 072517Pharm1: 80 µl 
 Expected Conc. = 216 
 Lab Value = 238.000 
 reportunit = ng/L  spikemix = Abs 061416: 40 µl & ERA 04281603: 40 µl 
 Expected Conc. = 68.4 
 Lab Value = 24.600 
 reportunit = ng/L  spikemix = Abs 061416: 100 µl & ERA 04281603: 100 µl 
 Expected Conc. = 171 
 Lab Value = 67.600 
 reportunit = ng/L  spikemix = Abs 061416: 100 µl & ERA 04281603: 100 µl 
 Expected Conc. = 171 
 Lab Value = 72.000 
 reportunit = ng/L  spikemix = Abs 061416: 40 µl & ERA 04281603: 40 µl 
 Expected Conc. = 68.4 
 Lab Value = 19.700 
 reportunit = ng/L  spikemix = Abs 061416: 40 µl & ERA 04281603: 40 µl 
 Expected Conc. = 68.4 
 Lab Value = 19.800 
 reportunit = ng/L  spikemix = Abs 061416: 80 µl & Crescent EN160610015: 80 µl 
 Expected Conc. = 136.8 
 Lab Value = 48.300 
 reportunit = ng/L  spikemix = Abs 061416: 40 µl & Abs 061516PHARM: 40 µl 
 Expected Conc. = 68.4 
 Lab Value = 17.700 
 reportunit = ng/L  spikemix = Abs 061416: 40 µl & Abs 061516PHARM: 40 µl 
 Expected Conc. = 68.4 
 Lab Value = 20.000 
 reportunit = ng/L  spikemix = Abs 061416: 80 µl & Abs 061516PHARM: 80 µl 
 Expected Conc. = 136.8 
 Lab Value = 59.800 
 reportunit = ng/L  spikemix = Abs 061416: 80 µl & Abs 061516PHARM: 80 µl 
 Expected Conc. = 136.8 
 Lab Value = 57.600 
 reportunit = ng/L  spikemix = Abs 061416: 80 µl & Abs 060916PHARM: 80 µl 
 Expected Conc. = 136.8 
 Lab Value = 53.400 
 reportunit = ng/L  spikemix = Abs 060916PHARM: 40 µl & ERA 04281604: 40 µl 
 Expected Conc. = 68.4 
 Lab Value = 24.200 
 reportunit = ng/L  spikemix = Abs 060916PHARM: 40 µl & ERA 04281604: 40 µl 
 Expected Conc. = 68.4 
 Lab Value = 26.000 
 reportunit = ng/L  spikemix = Abs 060916PHARM: 40 µl & ERA 04281604: 40 µl 
 Expected Conc. = 68.4 
 Lab Value = 23.300 
 reportunit = ng/L  spikemix = Abs 060916PHARM: 40 µl & ERA 04281604: 40 µl 
 Expected Conc. = 68.4 
 Lab Value = 23.200 
 reportunit = ng/L  spikemix = Abs 060916PHARM: 80 µl & Abs 061416: 80 µl 
 Expected Conc. = 136.8 
 Lab Value = 121.000 
 reportunit = ng/L  spikemix = Abs 060916PHARM: 80 µl & Abs 061416: 80 µl 
 Expected Conc. = 136.8 
 Lab Value = 52.000 
 reportunit = ng/L  spikemix = Abs 060916PHARM: 40 µl & Abs 061416: 40 µl 
 Expected Conc. = 68.4 
 Lab Value = 19.500 
 reportunit = ng/L  spikemix = Abs 060916PHARM: 40 µl & Abs 061416: 40 µl 
 Expected Conc. = 68.4 
 Lab Value = 20.200 
 reportunit = ng/L  spikemix = Abs 060916PHARM: 80 µl & Abs 061416: 80 µl 
 Expected Conc. = 136.8 
 Lab Value = 60.700 
 reportunit = ng/L  spikemix = Abs 060916PHARM: 80 µl & Abs 061416: 80 µl 
 Expected Conc. = 136.8 
 Lab Value = 58.000 
 reportunit = ng/L  spikemix = Abs 051315: 10 µl & ERA 0406-15-09: 10 µl 
 Expected Conc. = 20.71 
 Lab Value = 6.050 
 reportunit = ng/L  spikemix = Abs 051315: 10 µl & ERA 0406-15-09: 10 µl 
 Expected Conc. = 20.71 
 Lab Value = 7.310 
 reportunit = ng/L  spikemix = Abs 051315: 80 µl & ERA 0406-15-09: 80 µl 
 Expected Conc. = 165.68 
 Lab Value = 64.400 
 reportunit = ng/L  spikemix = Abs 051315: 80 µl & ERA 0406-15-09: 80 µl 
 Expected Conc. = 165.68 
 Lab Value = 58.900 
 reportunit = ng/L  spikemix = Abs 051315: 20 µl & Abs 052215: 20 µl 
 Expected Conc. = 41.42 
 Lab Value = 15.200 
 reportunit = ng/L  spikemix = Abs 051315: 40 µl & Abs 052215: 40 µl 
 Expected Conc. = 82.84 
 Lab Value = 24.600 
 reportunit = ng/L  spikemix = Abs 051315: 20 µl & Abs 052215: 20 µl 
 Expected Conc. = 41.42 
 Lab Value = 15.200 
 reportunit = ng/L  spikemix = Abs 050115: 40 µl & ERA 0406-15-08: 40 µl 
 Expected Conc. = 82.4 
 Lab Value = 29.000 
 reportunit = ng/L  spikemix = Abs 050115: 80 µl & ERA 0406-15-08: 80 µl 
 Expected Conc. = 164.8 
 Lab Value = 64.500 
 reportunit = ng/L  spikemix = Abs 050115: 20 µl & ERA 0406-15-08: 20 µl 
 Expected Conc. = 41.2 
 Lab Value = 14.700 
 reportunit = ng/L  spikemix = Abs 050115: 40 µl & Abs 051315: 40 µl 
 Expected Conc. = 82.84 
 Lab Value = 30.100 
 reportunit = ng/L  spikemix = Abs 050115: 40 µl & Abs 051315: 40 µl 
 Expected Conc. = 82.84 
 Lab Value = 25.800 
 reportunit = ng/L  spikemix = Abs 050115: 20 µl & Abs 051315: 20 µl 
 Expected Conc. = 41.42 
 Lab Value = 10.200 
 reportunit = ng/L  spikemix = Abs 050115: 40 µl & Abs 051315: 40 µl 
 Expected Conc. = 82.84 
 Lab Value = 30.400 
 reportunit = ng/L  spikemix = Abs 041814: 15 µl & ERA 0318-14-02: 15 µl 
 Expected Conc. = 109.8 
 Lab Value = 45.000 
 reportunit = ng/L  spikemix = Abs 041814: 8 µl & ERA 0318-14-02: 8 µl 
 Expected Conc. = 58.56 
 Lab Value = 20.600 
 reportunit = ng/L  spikemix = Abs 041814: 30 µl & ERA 0318-14-02: 30 µl 
 Expected Conc. = 54.9 
 Lab Value = 15.700 
 reportunit = ng/L  spikemix = Abs 041814: 30 µl & Abs 041614: 30 µl 
 Expected Conc. = 55.058 
 Lab Value = 16.000 
 reportunit = ng/L  spikemix = Abs 041814: 60 µl & Abs 041614: 60 µl 
 Expected Conc. = 110.12 
 Lab Value = 47.700 
 reportunit = ng/L  spikemix = Abs 041814: 30 µl & Abs 041614: 30 µl 
 Expected Conc. = 55.058 
 Lab Value = 19.800 
 reportunit = ng/L  spikemix = Abs 041614: 8 µl & ERA 0319-14-04: 8 µl 
 Expected Conc. = 58.728 
 Lab Value = 23.000 
 reportunit = ng/L  spikemix = Abs 041614: 8 µl & ERA 0319-14-04: 8 µl 
 Expected Conc. = 58.728 
 Lab Value = 24.500 
 reportunit = ng/L  spikemix = Abs 041614: 15 µl & ERA 0319-14-04: 15 µl 
 Expected Conc. = 110.12 
 Lab Value = 38.100 
 reportunit = ng/L  spikemix = Abs 041614: 30 µl & ERA 0319-14-04: 30 µl 
 Expected Conc. = 55.058 
 Lab Value = 16.700 
 reportunit = ng/L  spikemix = Abs 041614: 30 µl & Abs 041714: 30 µl 
 Expected Conc. = 55.058 
 Lab Value = 17.700 
 reportunit = ng/L  spikemix = Abs 041614: 60 µl & Abs 041714: 60 µl 
 Expected Conc. = 110.12 
 Lab Value = 37.900 
 reportunit = ng/L  spikemix = Abs 041614: 30 µl & Abs 041714: 30 µl 
 Expected Conc. = 55.058 
 Lab Value = 19.200 
 reportunit = ng/L  Y = 1
The SGPlot Procedure