Spectrophotometric Determination of Gemifloxacin Mesylate, Moxifloxacin Hydrochloride, and Enrofloxacin in Pharmaceutical Formulations Using Acid Dyes

Table 4

Intraday and interday precision and accuracy data for ENF obtained by the proposed methods.

Method	Added; (μg mL^−1)	Intraday				Interday
		Recovery; %	Precision; RSD %^a	Accuracy; RE %	Confidence; limit^b	Recovery; %	Precision; RSD %^a	Accuracy; RE %	Confidence; limit^b
BCG	5.0	99.10	0.42	−0.90	4.955±0.021	99.60	0.51	−0.40	4.98 ± 0.025
	10	100.20	0.78	0.20	10.02±0.078	99.80	0.75	0.20	9.98 ± 0.075
	15	99.40	1.16	−0.60	14.91±0.173	99.20	1.02	−0.80	14.88 ± 0.152
BTB	5.0	99.30	0.53	−0.70	4.965±0.026	100.60	0.40	0.60	5.03 ± 0.020
	10	99.50	0.90	−0.50	9.95±0.09	99.40	0.68	−0.60	9.94 ± 0.068
	20	100.50	1.15	0.50	20.10±0.231	99.60	0.96	−0.40	19.92 ± 0.191

aMean of six determinations; RSD%: percentage relative standard deviation; RE%: percentage relative error.
bConfidence limit at 95% confidence level and five degrees of freedom (𝑡=2.571).