Green Analytical Approach for the Determination of Zinc in Pharmaceutical Product Using Natural Reagent

Table 7

Assay for zinc sulphate.

S.No	Formulation^a	Labelled claim (mg)	Amount found (Mean ± SD)	Assay (%)
1.	Tablet-1	10	8.95 ± 0.05	99.44
2.	Tablet-2	10	9.09 ± 0.05	100.55
3.	Tablet-3	20	9.033 ± 0.07	100.36
4.	Tablet-4	20	9.2 ± 0.05	101.89

^aTablet-1 to Tablet-4 are four marketed formulations from different companies.