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

Table 5

Intraday and interday precision.

S.No.	Amount (μg·mL^−1)	Intraday absorbance (n = 3)		Interday absorbance (n = 3)
		Amount found; Mean ± SD	% RSD	Amount found; Mean ± SD	% RSD
1	6	0.305 ± 0.005	1.31	0.305 ± 0.005	1.69
2	9	0.343 ± 0.005	1.31	0.343 ± 0.005	1.29
3	12	0.382 ± 0.006	1.46	0.382 ± 0.006	1.56