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Table 4 Intra-day and inter-day precision of the proposed HPLC method (n = 5)

From: A validated stability-indicating HPLC method for determination of brimonidine tartrate in BRI/PHEMA drug delivery systems

Actual con. (μg/mL)

Intra-day precision

Inter-day precision

Measured con. ± SD; RSD (%)

Measured con. ± SD; RSD (%)

0.1

0.098 ± 0.002; 1.5

0.099 ± 0.003; 1.5

5

4.98 ± 0.02; 0.4

4.98 ± 0.02; 2.1

50

49.96 ± 0.32; 0.6

49.98 ± 0.02; 1.3

  1. SD standard deviation, RSD relative standard deviation, Con. concentration
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BMC Chemistry

ISSN: 2661-801X

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