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Rate of redispersibility and pH of ZnO suspensions formulated from the three suspending agents.
| Suspending agents | Concentration (% w/v) | pH | Rate of redispersibility (cycle) | |||
|---|---|---|---|---|---|---|
| Storage duration (week) | ||||||
| 0 | 1 | 2 | 3 | After 45 days | ||
| NaCMC | 1 | 7.6 | 8.2 | 8.5 | 8.7 | 10 |
| 2 | 7.7 | 8.3 | 8.6 | 8.6 | 15 | |
| 4 | 7.7 | 8.0 | 8.5 | 8.5 | 17 | |
|
| ||||||
| Acacia | 1 | 7.2 | 7.8 | 8.0 | 8.0 | 7 |
| 2 | 7.1 | 7.7 | 7.9 | 8.0 | 9 | |
| 4 | 7.3 | 7.9 | 8.2 | 8.2 | 14 | |
|
| ||||||
| Aloe weloensis mucilage | 1 | 7.5 | 7.7 | 7.9 | 8.2 | 6 |
| 2 | 7.8 | 8.0 | 8.0 | 8.3 | 7 | |
| 4 | 7.4 | 7.9 | 7.9 | 8.0 | 9 | |
