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The repeatability of ethanol, isopropyl alcohol, and methanol for liquid and gel hand sanitisers.
| Form | Analyte | Spike concentration (% v/v) | Mean observed concentration (% v/v) ± 95% CI | RSD (%) | n |
|---|---|---|---|---|---|
| Liquid | Ethanol | 0.750 | 0.752 ± 0.0090 | 1.500 | 6 |
| IPA | 0.750 | 0.764 ± 0.0050 | 0.823 | 6 | |
| Methanol | 0.0375 | 0.0375 ± 0.0003 | 0.859 | 6 | |
| Gel | Ethanol | 0.750 | 0.757 ± 0.0035 | 0.570 | 6 |
| IPA | 0.750 | 0.749 ± 0.0028 | 0.474 | 6 | |
| Methanol | 0.0375 | 0.0382 ± 0.0002 | 0.534 | 6 |
