Test for identification of type of emulsion

this ppt represent test about how to identify type of emulsion on the basis of some test.

1. Test For Identification of Type of Emulsion Prepared By: Lect. Mr. S. S. Mistree Sub :- Pharmaceutic’s -II Ishwar Deshmukh Institute of Pharmacy, D igras Yavatmal-445203 2019-20

2. The following test are done to discriminate between O/W and W/O emulsion Dilution Test Dye Test Conductivity Test Fluorescence Test

3. Dilution T est: T he emulsion can identify on the basis of dilution test Emulsion is diluted with water/oil O/W emulsion easily diluted with water W/O emulsion easily diluted with oil

4. Dye Test: when an emulsion is mixed with a oil soluble dye such as scarlet red dye and observed under the microscope. I f the continuous phase shows red color and dispersed globules shows colorless means W /O type of emulsion I f the dispersed globules shows red color and continuous phase colorless , means O /W type of emulsion

5. Conductivity Test: Water is good conductor of electricity but oil is not This test perform by dipping pair of electrode connected by a bulb in the emulsion If the bulb glow that means O/W type of emulsion If not glow that means W/O type of emulsion

6. Fluorescence Test: C ertain fixed oil has property of fluorescing in presence of UV radiation on microscopic observation. If continuous phase give fluorescence that means W/O type of emulsion. If dispersed globules gives fluorescence that means O/W type of emulsion .

7. Thank you… References : R. M. Mehta, pharmaceutics-II, third eddition-2010,vallabh prakashan .