What instrument is used to measure the specific gravity of urine?
The urinometer, a type of hydrometer, was used for measuring the specific gravity of urine. ‘Specific gravity’ is a function of the number, density and weight of the solute particles present in the urine, and is used as a measure of the concentrating power of the kidney.
What is used for testing specific gravity?
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. Hydrometers can be divided into two general classes: liquids heavier than water and liquids lighter than water.
What does specific gravity measure in a urine sample?
URINE SPECIFIC GRAVITY (USG) measures the concentration of particles in urine and the density of urine compared with the density of water. Measuring USG is an easy and convenient way to gauge a patient’s hydration status as well as the functional ability of his kidneys.
What is a urine refractometer?
Measuring urine S.G. using a refractometer. A refractometer is an instrument that measures the refractive index of a liquid. The more particles there are in a liquid the more a beam of light will be bent (refracted) as it passes from one medium to another e.g. from air to urine.
What is Lactometer used for?
A lactometer is an application of hydrometer and is used to check purity of cow’s milk. It works on the principle of Archimedes’ principle. The instrument is graduated into a hundred parts.
What is hydrometer used for?
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).
What is Lactometer and hydrometer?
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.
What is hydrometer used to measure?
How do you measure specific gravity?
The best way to measure specific gravity is to weigh a container and record its weight, then weigh the container full of water and full of the liquid of unknown specific gravity. Subtract the weight of the container from each weight and divide the weight of the liquid being measured by the weight of the water.
What is specific gravity refractometer?
Refractometer – Clinical Refractometer measures urine specific gravity, or gives the refractive index in seconds. Dimensions Place a drop or two of a sample on the prism and read the results. Sper Scientific portable refractometers work in ambient light with no battery or other power source necessary.
Why is hydrometer used?
A hydrometer is an instrument used to measure the specific gravity (or relative density) of liquids; that is, the ratio of the density of the liquid to the density of water. A hydrometer is usually made of glass and consists of a cylindrical stem and a bulb weighted with mercury or lead shot to make it float upright.
What is hygrometer used to measure?
hygrometer, instrument used in meteorological science to measure the humidity, or amount of water vapour in the air. Several major types of hygrometers are used to measure humidity.
What is a refractometer used for?
A refractometer is an optical instrument that is used to determine the refractive index of a substance, measuring how light is bent as it moves through the substance.
What is a psychrometer used for?
Psychrometers. A psychrometer measures humidity by taking both a wet-bulb and a dry-bulb temperature reading. With those two values known, the other properties of the air, including its moisture content, can be determined by computation or by reading a psychrometric chart.