How to test milk for synthetic quality
You can test for synthetic milk using its characteristics: shake milk with an equal amount of water; pure milk will have minimal froth, while synthetic milk will produce a stable lather. Additionally, synthetic milk can be identified by its bitter taste, soapy feel when rubbed, and it turns yellowish when heated.
Taste and feel test:
Taste: Take a few drops of milk. Synthetic milk often has a bitter aftertaste.
Feel: Rub a small amount of milk between your fingers. Synthetic milk may feel soapy.
Heating: Heat a small amount of milk. Synthetic milk tends to turn yellow, while pure milk remains unchanged or has a different colour change.
Shaking test for adulteration
Mix : In a test tube or glass, mix 5 ml of milk with 5 ml of water.
Shake : Shake the mixture vigorously.
Observe : If a stable and persistent lather forms, the milk is likely synthetic. Pure milk will only form a thin, temporary layer of foam.
Other tests for common adulterants (which can be present in synthetic mil)
Starch test: Boil 2-3 ml of milk, cool it, and add a few drops of iodine solution. A blue colour indicates the presence of starch.
starch. Detergent test: Mix 5-10 ml of milk with an equal amount of water and shake. A thick lather indicates the presence of detergent
Formalin test:
In a test tube, add 10 ml of milk and 2-3 drops of sulfuric acid along the side. If a blue or violet ring forms at the top, it contains formalin.
