New Spectrophotometric and Conductometric Methods for Macrolide Antibiotics Determination in Pure and Pharmaceutical Dosage Forms Using Rose Bengal

Table 4

Application of the proposed conductometric method to the determination of erythromycin thiocyanate in dosage forms*.

Erythrocin tablets			Erythrocin Pharco suspension
Taken (mg)	Found (mg)	Recovery %	Taken (mg)	Found (mg)	Recovery %
3	3.05	101.58	2	2	100
4	4	100	4	4.05	101.19
6	6.07	101.19	7	7.05	100.68
8	8.1	101.19	8	8.05	100.60
10	10	100	12	11.90	99.20
12	11.91	99.21	14	13.95	99.66
14	14.05	100.34
Mean		100.50			100.22
SD		0.85			0.73
SE		0.32			0.30
RSD		0.84			0.73
Variance		0.72			0.54

*Mean of three different experiments.