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Table 2 Results obtained by the SIA method and realized by the British Pharmacopoeia method for diclofenac assay in raw materials and pharmaceutical formulations

From: Screening of conditions controlling spectrophotometric sequential injection analysis

Trade name Formulation Diclofenac content Mean recovery ± RSD(%)1 t2
Samf® Bulk - 99.3 ± 1.45 2.14
OlfenTM-25 Tablets 25 mg 98.5 ± 2.14 2.06
OlfenTM-50 Tablets 50 mg 98.1 ± 2.81 2.11
Olfen®-75 I.M. Injection 75 mg in 2 ml 99.1 ± 2.26 1.87
Voltaren® Gel 1% (w/w) 103.4 ± 3.49 2.23
Diclogesic® Gel 1% (w/w) 102.7 ± 3.18 2.70
  1. 1: RSD: relative standard deviation for 7 replicates; 2: t-test value