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Table 5 Robustness Study of Prednisolone

From: Stability indicating HPLC method for the simultaneous determination of moxifloxacin and prednisolone in pharmaceutical formulations

Chromatographic Conditions

Assay %

tR(min)

Theoretical plates

Tailing

Methanol:buffer (64:36)

99.2

6.947

6328

1.01

Methanol:buffer (62:38)

100.8

7.447

6277

1.01

Methanol:buffer (60:40)

99.7

8.499

6341

1.01

Flow rate (1.3 mL/min)

99.4

8.433

6358

1.01

Flow rate (1.5 mL/min)

100.5

7.447

6249

1.02

Flow rate (1.7 mL/min)

100.4

6.569

6371

1.01

Buffer (pH 2.6)

100.4

7.497

6395

1.00

Buffer (pH 2.8)

99.9

7.447

6354

1.02

Buffer (pH 3.0)

98.8

7.498

6248

1.00