Simple and Selective Spectrophotometric Determination of Ofloxacin in Pharmaceutical Formulations Using Two Sulphonphthalein Acid Dyes

Table 6

Accuracy assessment by recovery experiments.

Method	Tablet studied	OFX in tablet; (µg/mL)	Pure OFX added; (µg/mL)	Total found; (µg/mL)	Pure OFX recovered*; Percent ± SD
Method A	Ofloxin-400	4.08	2.0	6.06	99.00 ± 1.21
		4.08	4.0	8.03	98.75 ± 1.11
		4.08	6.0	10.06	99.67 ± 1.15
Method B	Ofloxin-400	4.08	2.0	6.10	101.0 ± 1.17
		4.08	4.0	8.20	102.9 ± 1.09
		4.08	6.0	10.17	101.5 ± 1.20

∗Mean value of three measurements.