Research Article

A Validated RP-HPLC Method for the Estimation of Pizotifen in Pharmaceutical Dosage Form

Table 6

Robustness.

ConditionMean area% assay% difference

Unaltered144805.5100.00.0
Flow rate at 0.8 mL/min 144720.399.940.06
Flow rate at 1.2 mL/min143951.299.410.59
Mobile phase:
Acetonitrile : Methanol
92%08%144902.5100.060.06
88%12%144763.499.970.03
pH of mobile phase at 6.0144275.299.630.37
pH of mobile phase at 5.6144358.799.690.31