What principle is used for density determination on milkotester or other similar milk analyzer?
Milkotester analyzes the density of milk using a technique called specific gravity measurement. This technique involves measuring the density of milk compared to the density of water.
To measure the density, a milkotester device is used which consists of a hydrometer or a digital densitometer. The device is calibrated to measure the specific gravity of milk accurately. The specific gravity is a dimensionless quantity that represents the ratio of the density of a substance to the density of water.
When measuring the density of milk, it is important to add 1.0 to the density result because milk contains solids and other components apart from water. These components increase the overall density of milk compared to pure water.
By adding 1.0 to the measured specific gravity, we can convert it into what is known as "density relative to water at 4°C." This conversion allows for easier comparison and interpretation of results across different samples and measurements.
So, adding 1.0 to the density result helps in standardizing and normalizing the measurement, making it easier for analysis and comparison purposes in various dairy processes and quality control procedures.
equation for determination of specific gravity using hydrometer is
1 +corrected hydrometer reading/1000
if the corrected reading is 29, the specific gravity of the milk sample is 1.029
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