| Uncertainty components |
Ketamine |
Pethidine |
Cocaine |
Methandone |
Diazepam |
Estazolam |
Heroin |
Morphine |
Methamphetamine |
| uLC(Uncertainty from LC) |
0.017 |
0.09 |
0.005 |
0.01 |
0.007 |
0.02 |
0.01 |
0.01 |
0.03 |
| uGC(Uncertainty from GC) |
0.16 |
0.30 |
0.25 |
0.13 |
0.02 |
0.34 |
0.34 |
0.36 |
0.05 |
| ubb(Uncertainty of homogeneity) |
0.00054 |
0.0007 |
0.0004 |
0.0011 |
0.0004 |
0.0009 |
0.0004 |
0.002 |
0.0004 |
| us(Uncertainty of stability) |
0.00004 |
0.002 |
0.0003 |
0.0031 |
0.0007 |
0.0008 |
0.005 |
0.007 |
0.0001 |
| uc(Combined uncertainty) |
0.2 |
0.3 |
0.25 |
0.15 |
0.05 |
0.35 |
0.35 |
0.4 |
0.1 |
| k (Coverage factor) |
2 |
2 |
2 |
2 |
2 |
2 |
2 |
2 |
2 |
| U (expanded uncertainty) |
0.4 |
0.6 |
0.5 |
0.3 |
0.1 |
0.7 |
0.7 |
0.8 |
0.2 |
| Certified value (%) |
99.5 |
99.3 |
99.5 |
99.7 |
99.9 |
99.3 |
95.1 |
98.5 |
99.5 |
|
