Test 2 : Detection of dhatura in food grains
Testing Method:
- Take small quantity of food grains in a glass plate.
- Examine the impurities visually.
- Dhatura seeds which are flat with edges and blackish brown in colour can be separated out by close examination.
- Impurities are observed visually in adulterated food grains.
Dhatura seeds in food grains
Dhatura seeds in food grains
Dhatura seeds
Test 3 : Detection of excess bran in wheat flour
Testing Method:
- Take a transparent glass of water.
- Sprinkle a spoon of wheat flour on the surface of water.
- Pure wheat flour will not show excess bran on water surface.
- Impurities are observed visually in adulterated food grains.
Pure wheat flour
Excess bran in wheat flour
Excess bran in wheat flour
