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Table 1 The purity of EGCG, detected by high performance liquid chromatography (HPLC) analysis

From: The effect of (-)-epigallocatechin gallate as an adjunct to non-surgical periodontal treatment: a randomized clinical trial

Prepared concentration (mg/mL) Detected concentration (mg/mL) Purity Mean
1.0000 0.9326 93.26% 92.74 ± 0.74%
1.0000 0.9216 92.16%
1.0000 0.9221 92.21%