Question

What is a lactometer? Compare it with a common hydrometer. Does it measure the purity of milk? Explain briefly.

Answer 1

1. Lactometer is a device that is used to measure the specific gravity of milk.
2. Hydrometer and lactometer are similar devices that use the Archimedes principle to find the specific gravity(density) of a liquid and milk.
3. Lactometer is a form of hydrometer used to measure the purity of milk.
4. Lactometer works on buoyancy force by cream content in the milk. More the cream more would be the buoyancy force and less would the lactometer sink in the milk.