Use of Two Sulfonphthalein Dyes for the Sensitive and Selective Extraction-Free Spectrophotometric Assay of Albendazole in Bulk Drug and in Tablets

Table 4

Results of analysis of tablets by the proposed methods.

Tablets analysed	Label claim,; mg/tablet	Found∗ (Percent of label claim ± SD)
		Reference method	Proposed methods
			Method A	Method B
Alworm 400	400	101.2±0.75	100.5±1.20	101.8±1.01
			𝑡 = 1.11	𝑡 = 1.07
			𝐹 = 2.56	𝐹 = 1.81
ABD 400	400	99.8±0.56	99.9±1.19	100.8±1.25
			𝑡 = 0.17	𝑡 = 1.63
			𝐹 = 4.52	𝐹 = 4.98
Bandy 400	400	100.8±0.78	100.3±1.69	100.7±1.55
			𝑡 = 0.6	𝑡 = 0.13
			𝐹 = 4.69	𝐹 = 3.95

∗Mean value of five determinations.
Tabulated 𝑡 value at the 95% confidence level is 2.78.
Tabulated 𝐹 value at the 95% confidence level is 6.39.