From:  A gas chromatographic and spectrophotometric-based assessment of an oral preparation from a traditional exhilarating formulation; linking Persian medicine to the modern phytopharmaceuticals

 Standard phenolic content calibration

StandardConc. mg/mLAbs.
Gallic acid6.250.037
Gallic acid12.50.059
Gallic acid250.134
Gallic acid500.242
Gallic acid1000.468
Gallic acid2000.948

Abs.: absorbance; Conc.: concentration