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Results for the neutralizer determination in milk samples by the proposed and comparative methods
| Samples | Smartphone based colorimetric technique (mg/5 ml) | Spectro-photometric method (mg/5 ml) | Relative error (%) |
|---|---|---|---|
| 1 | 0 ± 0 | 0 ± 0 | Undefined |
| 2 | 6.25 ± 0.0050 | 5.61 ± 0.0020 | − 11.4 |
| 3 | 11.93 ± 0.0065 | 11.77 ± 0.0019 | − 1.4 |
| 4 | 23.28 ± 0.0030 | 25.32 ± 0.0072 | + 8.1 |
| 5 | 50.43 ± 0.0058 | 50.29 ± 0.0072 | − 0.3 |
