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Table 3 Intra-Day and Inter-Day precision of the proposed HPLC method

From: Stability indicating HPLC method for the simultaneous determination of moxifloxacin and prednisolone in pharmaceutical formulations

Drugs Actual concentration(μg mL-1) Intra-day precision Inter-day precision
Measured concentrations; RSD (%) Measured concentrations; RSD (%)
Moxifloxacin 25.0 24.8 ± 0.6; 1.7 25.3 ± 0.4; 1.1
50.0 50.5 ± 0.7; 0.2 51.2 ± 0.8; 1.0
75.0 74.1 ± 0.4; 1.5 75.7 ± 1.2; 1.5
Prednisolone 50.0 50.0 ± 0.1; 0.3 50.4 ± 1.7; 1.0
100.0 101.5 ± 0.4; 0.9 102.0 ± 0.9; 0.5
  150.0 153.1 ± 0.8; 1.7 151.8 ± 0.7; 1.6
  1. n = Average of 5 analysis, Chromatographic conditions: mobile phase methanol: 18 mM phosphate buffer 62:38, v/v, pH 2.8, Column BDS Hypersil C8 (250 X 4.6, 5 μm), flow rate 1.5 mL min-1, injection volume 20 μL, wavelength 254 nm.