In the present work, taste masked resinates of levofloxacin using Tulsion-335, an acidic cation ion exchange resins were used to develop its oral suspension formulations. The drug resin complexes were prepared by batch process by taking drug to resin ratios of 1:1, 1:2, 1:3 and 1:4. The techniques of differential scanning calorimetry (DSC), X-ray diffraction (XRD) and Fourier transform infrared...

A rapid colorimetric method, sensitive to 0-5 ,tg., is described for the determination of delta amino-laevulinic acid in urine. The method consists of a modification of the picrate method of Shuster in which interference by porphobilinogen is avoided by the use of an ion exchange resin. The method is found to give results which compare in accuracy with the longer standard method of Mauzerall an...

Cancer therapy with oncolytic measles virus (MV) requires high titers of pure, infectious particles (~108 times more per dose than the vaccine). A gentle but efficient downstream purification process is therefore essential. Here we investigated suitability ion-exchange chromatography for MV using resin-based stationary phases. The success was evaluated based on yield, ratio to total particles, ...

Coproporphyrin and uroporphyrin are separated from urineand from each other by absorption onto, and Selective elution from, an anion-exchange resin. The two compounds are #{233}eparated by using solvents differing in both polarity and pH. The porphyrins are then quantitated with an Aminco-Bowman Spectrophotofluorometer equipped with an ellipsoidal mirror and a red-sensitive photomultiplier tube...

The ion exchange resin Amberlite 958 was used to investigate its behaviour on the removal of hazardous vanadium(V) from aqueous media. This investigation carried out under various hydrodynamic conditions and chemical conditions, such as variation stirring speed, pH solution, dosage, initial in temperature. Vanadium(V) uptake onto highly dependent thus, speciation this phase; process had an endo...

Ion-exclusion chromatography (IEC) has been widely used in the separation of carboxylic acids, finding applications in the analysis of food and beverages, pharmaceuticals, biological samples, and acid rain samples.' The retention mechanism of carboxylic acids in ion-exclusion chromatography has also been investigated in many studies, and the factors which affect retention can be divided into th...