Naturally pure, Traditionally strong

Take some milk and pour it on a smooth surface, then gently tilt that surface and observe how it behaves.

If the milk is mixed with water, the drops run down very fast. If the milk moves slowly with a richer trail, it is a stronger sign that the milk is pure and has not been diluted.

Take some milk and water in a single bottle and shake the bottle well so the reaction becomes easy to notice.

If you find more foam building up inside the bottle, it is a strong sign that detergent has been mixed in. If there is no unusual foaming, the milk is far more likely to be pure and not mixed with detergent.

Take some milk in a bowl and mix it with soya bean powder so you can observe whether the reaction changes in a noticeable way.

If the smell changes after mixing, it is a strong sign that the milk may be mixed with urea. If the smell remains normal, the milk is a better sign of purity.

To make milk look thicker, some people may use starch, corn flour, rice flour, or similar additives. Add a little iodine to the milk to test for that kind of mixing.

If the milk changes its color to blue, that points to starch or similar thickening chemicals being used. If there is no such color change, the milk is a stronger sign of being pure.

Take some milk and pour it on the palm of your hand, then rub it gently with the other hand to feel how the texture behaves.

If the milk is synthetic, your hands may rub against each other very softly, almost like soap. If that slippery feeling is not there, the milk is a stronger sign of being pure.