VISCOSITY DETERMINATION OF CONCENTRATED SUSPENSIONS USING CAPILLARY DIPOMETRY

A new viscosity–capillary dipometer was designed and used in this investigation. Comparing this piece of equipment with other viscometers, the capillary dipometer is accurate, easy to operate, and much less expensive. The viscosities for calcium hydrogen phosphate and calcium oxalate suspensions are determined using the capillary dipometer. The data shows that this method is suitable for suspensions. This method could also be applied to other liquid dosage forms (i.e., emulsions) to provide quick and accurate results.