We have listed a few DARTs for your reference. Check them out.
Put a drop of milk on a polished slanting surface. Pure milk either stays or slowly flows leaving a white trail, otherwise it immediately flows without leaving a mark.
Take coconut oil in a transparent glass and refrigerate for 30 minutes. Pure coconut oil gets solidified whereas other oils remain as a separate layer.
Stir a spoonful of salt in a glass of water. A white solution indicates the presence of chalk and the other insoluble impurities settle down.
Soak some cotton in water or oil. Rub it on the surface of the vegetable (lady’s finger, chilli, sweet potato, etc.). If cotton absorbs colour, it indicates adulteration.
In a transparent glass, mix some coffee powder in water and leave for 5 minutes. If present, clay particles will settle at the bottom of the glass.
We touched upon a few categories over here; want to know more about such test? Visit the FSSAI website for more details.
Know more about other such techniques to check for impurities in food? Please share with us below.