Validated HPTLC Method for Simultaneous Estimation of Atenolol and Aspirin in Bulk Drug and Formulation

Table 3

Recovery studies.

Label claim (mg per tablet)	Amount added (mg)	Total amount (mg)	Amount recovered (mg) ±  %RSD	% recovery
Atenolol
50	40 (80%)	90	90.26 ± 0.83	100.28
50	50 (100%)	100	99.74 ± 1.76	99.74
50	60 (120%)	110	110.56 ± 0.95	100.50
Aspirin
100	80 (80%)	180	179.11 ± 0.65	99.50
100	100 (100%)	200	200.62 ± 1.18	100.31
100	120 (120%)	220	218.70 ± 0.96	99.40