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Table 3 Precision of the intra-day and inter-day measurements

From: An optimized high-performance liquid chromatography (HPLC) method for benzoylmesaconine determination in Radix Aconiti Lateralis Preparata (Fuzi, aconite roots) and its products

Conc. μg/ml Intra-day a Inter-day b
Peak areas Mean (SD) RSD % Precision % Peak areas Mean (SD) RSD % Precision %
Low (4.08) 63.0 (0.8) 1.36 95.90% 65.3 (0.5) 0.88 95.08%
Mid (20.42) 303.1 (0.4) 0.15 95.48% 309.9 (1.8) 0.60 95.80%
High (122.52) 1870.0 (7.5) 0.39 97.55% 1890.0 (17.8) 0.95 98.59%
  1. Note: a: n = 5; b: n = 6 (twice a day for three consecutive days).