P18.11
Thermal Stability — Accelerated Storage Test
Procedure 21 of 40 · Chapter 18 · §18.2.5
1 table 0 notes
Table 1
| Assessment Parameter | Method | Baseline (T=0) | Week 1 | Week 2 | Week 3 | Week 4 | Acceptance Criterion |
|---|---|---|---|---|---|---|---|
| Visual appearance | Visual inspection against panel | Record | Record | Record | Record | Record | No phase separation; no sediment |
| Color (ΔE) | Colorimeter vs. T=0 standard | 0 | ≤0.5 | ≤1.0 | ≤1.5 | ≤2.0 | ΔE ≤2.0 at 4 weeks |
| Odor | Trained panel, 0–4 scale | 0 | ≤1 | ≤1 | ≤1.5 | ≤2 | Change ≤2 points |
| Clarity (NTU) | Turbidimeter | Record | Record | Record | Record | Record | ΔNTU ≤+5 from baseline |
| pH | Calibrated electrode | Record | Record | Record | Record | Record | ΔpH ≤±0.5 from baseline |
| Viscosity (cP) | Brookfield at specified spindle/speed | Record | Record | Record | Record | Record | ±15% of baseline value |
| Phase separation | Visual, % of separated layer | 0% | 0% | 0% | 0% | 0% | No visible separation |