Determination of levofloxacin, norfloxacin, and moxifloxacin in pharmaceutical dosage form or individually using derivative UV spectrophotometry

Table 3 Precision Study levofloxacin

Sample No	% Assay	Intra-day assay			Inter-day assay
Sample No	(repeatability)	1st h	3rd h	8th h	1st day	3rd day	5th day	7th day
1	100.8	99.25	100.25	99.85	101.52	100.58	99.52	100.25
2	101.85	99.65	100.35	99.65	98	100.52	100.2	100.6
3	101.65	99.4	100.45	100.2	99.5	99	99.8	100.2
4	101.6	99.5	100.3	99.68	98.8	102.5	102.5	99.5
5	101.55	99.58	100.58	99.5	100.25	101.5	99.8	99.6
6	101.4	99.65	100.45	99.85	101.8	99.85	101.5	99.54
Mean ± SD	101.74 ± 0.36	99.54 ± 0.16	100.4 ± 0.085	99.76 ± 0.25	99.87 ± 1.50	100.55 ± 1.43	100.0 ± 1.13	99.9 ± 0.461
% RSD	0.361593	0.168325	0.085391	0.252521	1.506906	1.43373638	1.358958	0.460751

ISSN: 2661-801X