BQS OBSP Determination:
PHTHALAZINONE
METHOD: 2437 , TESTIDCODE: 68675LCM60
Open Data Set

Analysis Date = 09/29/16 SpikeMix = ChemService 5154100: 100 µl & Abs 072516: 100 µl Pct Recovery = 543% Analysis Date = 09/29/16 SpikeMix = ChemService 5154100: 100 µl & Abs 072516: 100 µl Pct Recovery = 500% Analysis Date = 01/10/17 SpikeMix = Abs 071816: 40 µl & Spex Organics TS160603008: 40 µl Pct Recovery = 968% Analysis Date = 01/10/17 SpikeMix = Abs 071816: 40 µl & Spex Organics TS160603008: 40 µl Pct Recovery = 901% Y = 1.5 Y = 0.5 Y = 1
The SGPlot Procedure

Plotted Points Statistics
PHTHALAZINONE

Spike Level N Mean Std-Dev. Median F_Pseudo
< Reporting Level 2 934% 48% 934% 50%
>= Reporting Level 2 522% 31% 522% 32%
Total 4 728% 240% 722% 306%

Sample Statistics
PHTHALAZINONE

Characteristic N % % Basis
Plotted 4 11% Spiked
Estimated Values 2 6% Spiked
Deleted Values 3 3% Spiked + Not Spiked
Spiked, Censored 13 37% Spiked
Spiked 37 .  
False Negatives 18 51% 18 out of 35
Not Spiked 52 .  
False Positives 6 12% 6 out of 51