Table 3

Sample No.	PCR (%Recovery)		PLS (%Recovery)
Sample No.	Nifedipine	Atenolol	Nifedipine	Atenolol
1	99.90	100.80	99.90	100.72
2	101.33	99.77	101.33	99.77
3	99.28	101.46	99.44	101.36
4	98.50	101.89	98.50	101.89
5	101.66	100.24	101.60	100.24
6	100.00	102.75	100.08	102.70
7	97.80	99.50	97.80	99.50
8	100.72	101.78	100.72	101.78
Mean	99.89	101.02	99.92	100.99
% RSD	1.34	1.35	1.32	1.10

Table 3: Percent recoveries of nifedipine and atenolol in the validation set by PCR and PLS regression models.