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Figure 2-3
Graph of Standard Calibration Errors
2.
Accuracy –
Accuracy was determined by testing the spiked samples described in Table 2-2. Mean recoveries ranged from 96-
102%. The results are summarized in Table 2-5.
Table 2-5
Accuracy/Spike Results
0.03% FOS spike
(9% sucrose)
0.3% FOS
spike
0.3% P95
spike
0.3% Synergy
1 spike
3% FOS
spike
3% P95
spike
3% Synergy
1 spike
min%
recovery
90.8%
91.7%
93.9%
94.1%
92.6%
92.5%
95.3%
avg %
recovery
102%
100%
99.0%
98.4%
96.2%
96.0%
97.2%
max %
recovery
115%
107%
113%
104%
101%
99.0%
101%
%RSD
7.12%
5.43%
6.09%
2.85%
2.85%
2.35%
2.04%
0.03%, 0.3%, and 3% are nominal spike values, N=9 (three replicates in each of three independent runs) for all levels and fructans.
3.
Precision –
Precision was assessed by both the analysis of 20 independent duplicate sample preparations (using 6-7 analysts and
4-5 instruments in 2-3 labs) as well as the overall assessment of additional analyses of the AN internal control (using 7 analysts
and 9 instruments in 3 labs).
a.
Precision was additionally assessed for 6 SPIFAN matrices by four days of duplicate testing (Table 2-9). Data is still being
collected at this time.
FOS-04
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