Urinometer
Encyclopedia
A Urineometer is a simple piece of equipment for determining urine specific gravity
Urine Specific Gravity
Urine specific gravity is a laboratory test that measures the concentration of particles in the urine. Normal values are between 1.020 to 1.028 Osmolality is normally used for more detailed analysis but USG remains popular for its convenience....

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A typical urinometer is composed of a float, a weight, and a stem. The float is an air-filled glass tube, ending in the weight on the left and the stem on the right. The weight is a bulb filled with ball bearings embedded in a red solid, probably a glue of some sort. The glass stem extends to the right, and has calibrated gradations and numbers marked off to indicate specific gravity measurements.

It is placed in a tube of urine, and where the miniscus of the urine reaches displays the specific gravity of the urine.

A urinometer is typically used in medical diagnostic labs.
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