Table 4.
STORAGE | NOMINAL CONCENTRATION (μg mL−1) | MEAN VALUE (μg mL−1) | SD | CV | % NOMINAL |
---|---|---|---|---|---|
Freeze–thaw stability | 0.4 | 0.42 | 0.035 | 8.4 | 105 |
7 | 7.5 | 0.43 | 5.7 | 107 | |
Long-term stability | 0.4 | 0.43 | 0.042 | 9.8 | 108 |
7 | 7.6 | 0.50 | 6.6 | 109 | |
Short-term stability | 0.4 | 0.39 | 0.036 | 9.3 | 97 |
7 | 6.8 | 0.41 | 6.0 | 97 | |
Post-preparative stability | 0.4 | 0.43 | 0.033 | 7.6 | 108 |
7 | 7.3 | 0.30 | 4.1 | 104 |