Table 1

Parameters	TLC method		RP-HPLC method
Parameters	ALP	BENZ	ALP	BENZ
L.P Mixturesa	98.71 ± 0.940	99.19 ± 0.938	98.68 ± 1.196	100.39 ± 1.285
Alloben® tabletsb (B.No.100251)	99.40 ± 1.447	98.66 ± 0.842	100.47 ± 0.954	98.46 ± 0.565
Standard additiona	99.72 ± 0.569	98.97 ± 0.519	97.96 ± 1.107	98.93 ± 0.543
Degree of freedomc F-test	2.454 (2.787)^*	1.954 (2.450)^*	0.496 (2.210)^*	1.241 (2.357)^*
Degree of freedomc Student’st- test	4.214 (4.818)^*	3.247 (4.224)^*	2.097 (4.245)^*	3.846 (3.971)^*

^aAverage of 3 determinations

^bAverage of 6 determinations

^cFigures between parenthesis represent the corresponding tabulated values of t and F at P = 0.05.

^cHPLC method using: phosphate buffer (pH=4.0)-acetonitrile- methanol (50: 30: 20, v/v/v) as a mobile phase and 250 nm as the detection wavelength.

Table 1: Determination of the studied drugs in the laboratory prepared mixtures (L.P.) and pharmaceutical preparation by the proposed methods and statistical comparison with the reported RP-HPLC methods.