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Table 3 Physical and chemical properties of the eye drop suspension

From: Formulation, optimization, qualitative and quantitative analysis of new dosage form of corticosteroid

Parameters

Specifications

Description

White to off white, free of solid particles

pH

5.5 to 6.5

Specific gravity

1.000–1.002 g/mL

Viscosity

250–300 cps at 20 °C @ needle 1 at 300 rpm

Re-suspendability

After 20 turns or less it is homogenized

Sedimentation volume

The supernatant liquid is not more than 50.0%

Identification

Triamcinolone acetonide

The retention time of sample and standard should be same

Assay

Triamcinolone acetonide

90–110%