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Live Testing of Water Addition in Milk in front of Milkman (Milk Sample failed in Test) (Hindi) (HD)

1,946 views · Published 2 May 2017 · 3:59 · Indexed 26 October 2026

Channel: Sukhdev Taneja · 2017 · Science & Technology

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Watch out easy steps to check water adulteration in milk by using Lactometer (Hydrometer) in house. (Voice : Hindi)

Milk is a common drink of our daily diet. But mostly time, it may have Urea, Formalin, Vanaspati, Starch and water as impurity. Packed milk from brands as well as milk purchased from milk-vendors can be adulterated so it is always better to check for them before consuming.

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Water turns out to be the most common adulterant in milk. It reduces the nutritional value of milk. If contaminated, water poses a health risk to consumers. 

How to check water adulteration in Milk by using lactometer :

A lactometer measures the density of milk. It tells the user how much water is in the milk that is being sampled. This is an instrument used to determine the richness of milk.

Lactometer : Measure the amount of water in the milk. A Lactometer is used to find out the amount of water in the milk. It works on the principle of specific gravity of milk. It consists of a Test-Tube and a Meter Bulb.

Using this instrument is very simple. Put some milk in the test-tube. Dip the meter bulb in it, the bulb going in first. You will notice that the meter bulb floats. The reading on the meter indicates how pure/impure your milk is.

The deeper the bulb sinks, the more dilute/impure the milk. If the reading is at the red mark, it shows that the milk is rich and pure.

Milk is one of the most important ingredients for children's overall development, it is essential for adult health as well. Milk is also widely used in food item like desserts, baking, tea and coffee etc.

Most of the commonly used adulterant for milk includes Detergent, White Paint, Caustic Soda, Refined Oil and glucose. 

The adulterants like Salt, Detergents and glucose add to the thickness and viscosity of the milk while starch prevents curdling of milk. 

These adulterants are hazardous and cause irreversible damage to the human body. 

The detergents in milk caused food poisoning and gastrointestinal complications. The other synthetic compounds cause impairments, heart problems and cancer.

Water turned out to be the most common adulterant in milk. It reduces the nutritional value of milk. If contaminated (with pesticides, heavy metals), water poses a health risk to consumers

Adulteration of water in milk is so common in India. But it is not much toxic to health as adulteration of drinking water is.

Note :

1) Salt and detergents are added to adjust lactometer reading to add thickness to the milk.
2) Contaminate milk can be countered by ensuring proper sanitation and hygiene at all processing stages as well as by boiling and pasteurizing milk properly.
3) Nitrogenous compounds are added to artificially enhance the taste of protein in milk.
4) Synthetic milk turns yellowish on heating. With some experience, one can easily make out whether it is pure natural milk or a synthetic liquid sold as milk.
5) One of the most common form of adulteration in milk is mixing of urea as it does not changes the taste and is little difficult to detect.

Consideration

1) Make sure you boil the milk on slow flame till boiling point. Avoid re-boiling milk as it brings down the nutritional value of milk.
2) While the easiest way to adulterate milk is by adding water, reagents and prohibited neutralisers like hydrated lime, sodium hydroxide, sodium carbonate or sodium bicarbonate are added to milk to prevent spoilage.
3) One really can not do anything when it comes to the packed pasteurized milk. Such products undergo a series of processes and it is hard to trace the point of adulteration. 
4) Since the adulteration techniques have advanced these days so it is very difficult to identify adulteration. You can not find any adulteration until you use some catalyst to check its purity.
5) There were 37 pure Indian breeds and due to foreign activist’s effort almost all the breeds are now extinguished with only few breeds left.

To stop milk adulteration near your diary, you should do research and keep an eye. Visit your dairy periodically and keep a strict watch.

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