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Chromatography Research International
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Chromatography Research International
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2013
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Article
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Tab 5
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Research Article
Validated Stability Indicating RP-HPLC Method for Simultaneous Estimation of Codeine Phosphate and Chlorpheniramine Maleate from Their Combined Liquid Dosage Form
Table 5
Result of accuracy studies.
Name of drug
Amount in sample (mg)
Amount of drug spiked in mg, (% recovery level)
Amount found, (mg) AM ± SD*
% SE
% RSD
20
16, (80%)
36.37 ± 0.06
0.034
0.18
CP
20
20, (100%)
40.36 ± 0.10
0.057
0.25
20
24, (120%)
44.55 ± 0.11
0.063
0.25
8
6.4, (80%)
14.38 ± 0.01
0.005
0.13
CPM
8
8, (100%)
15.98 ± 0.06
0.034
0.42
8
9.6, (120%)
17.59 ± 0.06
0.034
0.38
.