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The amount of DPPH added.
| Absorbance value | Amount of sample added |
|---|---|
| Ao | 1mL DPPH ethanol solution + 2mL anhydrous ethanol + 1mL blank solvent |
| As | 1mL DPPH ethanol solution + 2mL anhydrous ethanol + 1mL sample solution |
| Aj | 3mL anhydrous ethanol + 1mL sample solution |
