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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.
A hydrometer or lactometer is an instrument used for measuring density or relative density of liquids based on the concept of buoyancy. They are typically calibrated and graduated with one or more scales such as specific gravity.
The specific gravity is usually measured using an instrument called a hydrometer. The hydrometer partially submerges in the liquid sample, and the reading on the scale at the air-water junction point is recorded, as illustrated in Fig. 1.7.3.
Hydrometer, device for measuring some characteristics of a liquid, such as its density (weight per unit volume) or specific gravity (weight per unit volume compared with water). The device consists essentially of a weighted, sealed, long-necked glass bulb that is immersed in the liquid being.
Understand the measurement. The most common scale on hydrometers is "specific gravity." This is the ratio of the liquid's density to the density of water. Pure water should give a reading of 1.000. A higher reading means the liquid is denser (heavier) than water, and a lower reading means it is lighter.
Involving velocity, pressure, density and temperature as functions of space and time. API expresses the gravity or density of liquid petroleum products. Online API to Specific Gravity calculator. The content of sucrose - Brix scale vs. Specific Gravity and Plato - used in the sugar, fruit juice and wine making industry.
Read the specific gravity from the hydrometer. The hydrometer is marked with different specific gravity measurements at different intervals. Once it stops floating, the water line will be at one of these marks. The number corresponding to this mark is the specific gravity of your liquid.
Specific gravity (SG) is one of the base hydrometry units used for relative density. In most cases this is relative to the density of water, water therefore having a specific gravity of one (1).
Measure true specific gravity of liquids. Chemical-resistant bulbs and stems. Streamlined to avoid trapping air bubbles. With directional device that stops the instrument with the scale facing the user for more convenient, more accurate readings.
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