Dosage accuracy and precision attained after suspending a tablet in 10 mL water and extracting a fraction: 1 mL or 2 mL, a tenth or a fifth of a tablet constituting the intended dose
| Direct extraction | Direct extraction | Stirring | Stirring and pumping | Stirring and pumping | |
| Volume extracted | 1 mL | 2 mL | 1 mL | 1 mL | 2 mL |
| Dispersible Aspirin 75 mg | 98.7±14.5 (80.0–117.3) | 92.2±13.3 (76.0–113.3) | 83.4±8.4 (70.7–92) | 71.1±4.3 (66.7–78.7) | 72.9±3.1 (69.3–77.3) |
| Bayer Chewable 81 mg | 9.3±6.4 (6.2–22.2) | 12.4±9.6 (4.9–28.4) | 36.2±39.5 (14.8–116.0) | 39.9±17.0 (23.5–66.7) | 34.2±6.6 (23.5–42.0) |
| Disprin 300 mg | 45.7±2.6 (43.3–49.9) | 55.0±3.6 (50.7–60.8) | 73.4±9.3* (67.2–89.5) | 89.0±5.3 (80.5–95.8) | 95.5±2.7 (92.7–98.9) |
| Aspirin 500 mg | 3.4±1.1 (2.5–5.6) | 7.7±4.1 (3.3–14.4) | 13.0±7.3 (9.2–27.8) | 43.2±12.4 (20.9–54.1) | 37.3±21.8 (20.6–79.8) |
Per cent of intended dose ±SD (lowest–highest value) (n=6) is given. All samples were extracted from zone 2 of the medicine measure.
*n=5.