f33ea3c8_LIBRARY_AND_INFORMATION_CENTRE__Food_Article
[Adulterant] Water Urea Put a drop of milk on polished vertical surface. The drop of pure milk either stops or flows slowly leaving a white trail behind it. Whereas milk adulterated with water will flow immediately without leaving a mark. Take 5 ml of milk in a test tube and add 2 drops of bromothymol blue soln. Development of blue colour after 10 minutes indicates presence of urea. [Food Article] 
Milk
PREVENTING FOOD ADULTERATION - N.D.R.K. NURSING LIBRARY AND INFORMATION CENTRE
Food Article