What is the use of Lactometer?

A Milk Hydrometer also known as a lactometer is an instrument that is used to check for the purity of milk by measuring its density. Milk of given fat % content can have density within a certain fixed range. A lactometer consists of a cylindrical graduated tube closed at both ends. What is a Lactometer?
Lactometer is a small glass instrument that is used to test the purity of the milk. It works on the principle of specific gravity of milk (Archimede’s Principle). It measures the relative density of milk with respect to water. If the specific gravity of a sample of milk is within the approved ranges, the milk is pure.

How does a Lactometer test water in milk?

  1. Step 1- Whenever you want to test the milk purity, you just put the lactometer in milk.
  2. Step 2- If it sinks up to the mark ‘M’ which is mentioned in the lactometer that means milk is pure or if not that means milk is impure.
  3. Step 3- If the milk is mixed in water then it would sink higher than the mark ‘M’.

What is hydrometer used for?
A hydrometer is an instrument used to determine specific gravity. It operates based on the Archimedes principle that a solid body displaces its own weight within a liquid in which it floats. Hydrometers can be divided into two general classes: liquids heavier than water and liquids lighter than water.

How can I test my milk fat at home?

2.Fat Content

  1. Put 10 ml of sulphuric acid in the butyrometer.
  2. Add 11 ml of milk from the average sample.
  3. Add 1 ml of amyl alcohol.
  4. Shake the butyrometer to dissolve the milk elements.
  5. Put the butyrometers in the centrifuge.

What is the price of Lactometer?

Indiginous Medigold Milk Lactometer for checking Milk Purity with in a Minute (1)

M.R.P.: ₹250.00
Price: ₹109.50
You Save: ₹140.50 (56%)
Inclusive of all taxes

Frequently Asked Questions(FAQ)

What is Archimedes Principle in science?

Archimedes’ principle states that a body immersed in a fluid is subjected to an upwards force equal to the weight of the displaced fluid. This is a first condition of equilibrium. We consider that the above force, called force of buoyancy, is located in the centre of the submerged hull that we call centre of buoyancy.

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What is CLR in milk?

Where CLR is the corrected lactometer reading and “F” is the fat percentage of milk sample. For calculating the CLR, lactometer is allowed to float freely and the reading is taken.

What are the two types of Lactometer?

The quevenne lactometer – designed to determine the specific gravity of milk at 15.5ºC (60ºF). Zeal Lactometer – designed to determine the specific gravity of milk at 29º C at 84º C. The Watson lactometer – is applied at a temperature of 39ºC. ISI lactometer calibrated at 27ºC is used.

What is acid battery hydrometer?

A hydrometer is used to determine the state of charge of each cell of a battery. The hydrometer will determine the cells specific gravity of electrolyte (its weight compared to water). A hydrometer is a bulb or tear drop syringe which will extract electrolyte from the cell.

Which liquid is used in Lactometer?

How do you refill a Lactometer with ballpoint?


  1. Take an empty ball pen refill. …
  2. Take a boiling tube and fill it with water.
  3. Put the refill in with the metallic point inside the water.
  4. To make the refill stand upright in the water, put a small piece of eraser into the middle refill.
  5. Label the stage at which the refill is above water with a marker.

Which is the biggest dairy in India?

Dudhsagar Dairy is the largest dairy in Asia, processing on an average 1.41 million kilograms (3.1×106 lb) of milk each day. … Dudhsagar Dairy.

Gate of Dudhsagar dairy
Type Cooperative (AMUL)
Founded 1963
Headquarters Mehsana, Gujarat, India
Key people Ashok Chaudhary Chairman, Gujarat Co-operative Milk Marketing Federation Ltd. (GCMMF)

How do you read a Lactometer reading?

Normal milk has a density of 1.026 -1.032 g/ml (or 26 – 32 on the lactometer reading). If water has been added, the lactometer reading will be below 26. If any solid such as flour has been added, the reading will be above 32.

What is Tralle?

What is Baume light hydrometer?

In hydrometer. The Baumé hydrometer, named for the French chemist Antoine Baumé, is calibrated to measure specific gravity on evenly spaced scales; one scale is for liquids heavier than water, and the other is for liquids lighter than water.

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Can I use a battery hydrometer to measure alcohol?

It is used for checking battery condition in cars, alcohol in wines and spirits and sugar levels in wines. … There is no difference in principle between this hydrometer and an alcohol meter or a car battery checker – they are all hydrometers and they all check the specific gravity.

How many Litres of milk does a Gir cow give per day?

An average Gir cow yields about 10 to 15 liters per day in good climatic conditions. It might even yield more in its native state of Gujarat. High milk production capacity. Also, the milk from the cows is considered to be of premium quality due to the presence of A-2 beta-casein protein substance.

How is milk price calculated?

According to the two-axis pricing policy, the price of milk is calculated by fixing a pre-determined rate for fat and solids-not-fat. In this system fat and SNF are, generally, given equal value and per kg. price for fat and SNF are fixed in that ratio at which these occur naturally i.e. round 2/3 of fat price per kg.

What is a Babcock tester?

The Babcock test is an inexpensive and practical procedure to determine the fat content of milk. It is named after its developer, Stephen M. Babcock (1843–1931), professor at the University of Wisconsin.

How do you measure milk?

A lactometer is an instrument that is used to check for the purity of milk by measuring its density. An instrument to find out the content of the water in the milk or to test the richness of the milk is thus termed as ‘lactometers’.

How do you test the water level in milk?

For milk testing lactometer dipped in milk which we are testing. In lactometer the point up to which it sinks in the pure milk is marked after that put in water and marked at the point up to which it sinks in water. It sinks less in milk then water because as we know milk is denser then water.

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How accurate is Lactometer?

In lactometer the point up to which it sinks in the pure milk is marked after that put in water and marked at the point up to which it sinks in water. …

Type Engineer’s Precision Level
Magnetic No
Color White
Level Accuracy 95%

What is Rho GV?

Since the definition of density ρ = m V rho=dfrac{m}{V} ρ=Vm​rho, equals, start fraction, m, divided by, V, end fraction can be rearranged into m = ρ V m=rho V m=ρVm, equals, rho, V, that means the term ρ V f rho V_f ρVf​rho, V, start subscript, f, end subscript corresponds to the mass of the displaced fluid.

What is the story behind Eureka?

Archimedes has gone down in history as the guy who ran naked through the streets of Syracuse shouting Eureka! — or I have it! in Greek. The story behind that event was that Archimedes was charged with proving that a new crown made for Hieron, the king of Syracuse, was not pure gold as the goldsmith had claimed.

How the ship is floating in SEA?

The buoyant force pushes upwards against the object. Gravity exerts a downward force on the object (its weight), which is determined by the object’s mass. So if the force exerted downward on the object by gravity is less than the buoyant force, the object will float.

What is the most popular milk?

5. Cow’s milk. Cow’s milk is the most commonly consumed dairy milk and a good source of high-quality protein ( 8 ). It’s naturally rich in calcium, B vitamins, and many minerals.

What is milk gravity?

Specific gravity of normal milk is 1.028 to 1.032. Specific gravity of water is one. … Specific gravity of milk.

Specific gravity of different substances Value
Skim milk 1.036

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