Test for the Determination of Emulsion Type (HINDI) GPAT, NIPER, and Other Exam Exclusive

Download "Solution Pharmacy" Mobile App to Get All Uploaded Notes, Model Question Papers, Answer Papers, Online Test and other GPAT Materials - play.google.co...
EMULSION
Emulsions are the mixtures of two or more type of liquids where, one is such as droplets, of tiny or even ultramicroscopic size, which are distributed throughout each other. An emulsion can be defined as a colloid consisting of two or more non-homogenous type of liquids wherein one of the liquid contains the dispersion of the different form of liquids.
Types of Emulsion
Emulsions can be classified on the basis of the properties of the dispersed phase and the dispersion medium.
1) Oil in water (O/W):
In this type of emulsion, the oil will be the dispersed phase and water will be the dispersion medium. The best example for o/w emulsion is milk. In milk, the fat globules (which act as the dispersed phase) are suspended in water (which acts as the dispersion medium).
2) Water in oil (w/o):
In this type, water will be the dispersed phase and oil will be the dispersion medium. Margarine (a spread used for flavouring, baking and working) is an example of water in oil emulsion.
Emulsifier / Emulsifying agent
These are substances which are added to emulsions for stabilization purpose.
Methods to Identify the Type of Emulsions
1) Dilution test
On adding water to an o/w emulsion, it will still remain stable as water is the dispersion medium, but on adding oil it will get destabilized as oil & water are immiscible. Similarly, w/o emulsion can be diluted with oil & would still be stable, but would get destabilized on the addition of water.
2) Conductivity test
In this test the emulsion is kept between 2 electrodes and a bulb is connected in the circuit as shown in the diagram. An o/w emulsion will conduct electricity as water conducts electricity, but a w/o will not conduct electricity.
3) Dye test
In this, a water-soluble dye is added to the emulsion. If it is an o/w emulsion, the dispersion medium appears red and the dispersed phase colourless and vice-versa.
Get in touch with the solution by just clicking following links-
4) CoCl2 / Filter paper Test: Filter paper impregnated with CoCl2 dried (blue) changes to pink when o/w emulsion is added. This test may fail if emulsion is unstable or break in the presence of electrolytes.
Get in touch with the solution by just clicking following links-
Facebook Group- / solutionpharamcy
Facebook Page- / pharmavideo
New Channel (Pharmacy Dictionary) / @pharmacydictionary
Instagram- / solutionpharmacy
E-Mail for official and other work - [e-mail]
LinkedIn- / pushpendrakpatel
#solutionpharmacy #Pharmacologyclass #Pharmacognosyvideos #GPATonlinetest #GPATclass #GPATvideos #Microbiologyclass#Microbiology#