Let us learn about battery hydrometer.
Battery hydrometer is used for measuring the relative density of a liquid, directly and hence to test the purity of a liquid.
Battery hydrometer works on the principle of flotation. The working of battery hydrometer can be understood by the simple experiments. if it is acid battery then it is called acid battery hydrometer
A hydrometer used to check the concentration of sulphuric acid with a battery is called battery hydrometer
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