Stability-Indicating HPTLC-Densitometric Method for Estimation of Dorzolamide Hydrochloride in Eye Drops

Table 7

Summary of validation parameters.

Parameter	DORZO
Linearity range (ng/spot)	100–500
Correlation coefficient	0.9992 ± 0.04
Limit of detection (ng/spot)	30
Limit of quantitation (ng/spot)	95
Recovery (n = 6)	99.42
Precision (% R.S.D.)
Repeatability	0.08
Intermediate	1.68
Robustness	Robust
Specificity	Specific