Solvent Evaporation Method:
The accurately weighed drug and co-former, 354 mg of ACF and 122 mg of Ni (1:1 molar ratio) were dissolved in 1 ml of Dimethyl Sulphoxide (DMSO) and left for slow evaporation. The fine
crystals were obtained after 5 days, which were
collected into a tight container and stored in desiccators till further use (ACF-NI).