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Comparison of water concentrations with corresponding PA-derived fractional values (five means; for each mean, 100 PA signals were used).
| Preset water concentration | 10% | 30% | 50% | 70% | 90% |
|---|---|---|---|---|---|
| Photoacoustically measured water concentration (solution 1) | 8.5±0.4% | 30.3±1.1% | 50.6% | 72.2±0.8% | 89.0±0.5% |
| Photoacoustically measured water concentration (solution 2) | 92.7±0.4% | 70.9±1.1% | 50.6% | 28.9±0.8% | 12.1±0.5% |
