No. | Tests | Results at temperature 40 °C | ||
---|---|---|---|---|
Initial value | After 1Â month | After 3Â months | ||
I. | Particle size (nm) | 14.1 | 15.1 | 17.1 |
II. | PDI | 0.267 | 0.257 | 0.218 |
III. | Zeta potential (mV) | −96.50 | −95.54 | −93.55 |
IV. | Dissolution | 99.9019 ± 0.0841 | 99.6020 ± 0.0434 | 98.8514 ± 0.4937 |