Detection of F− in toothpaste samples.
| Sample | Brand | F− content (annotated) | F− content (marked) |
|---|---|---|---|
| 1 | Jiajieshi | 0.11% | 0.13% |
| 2 | Darlie | 0.10% | 0.11% |
| 3 | Zhonghua | 0.14% | 0.15% |
| 4 | Colgate | 0.10% | 0.08% |
| 5 | Saky | 0.14% | 0.12% |
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