Showing posts with label Centrifuge. Show all posts
Showing posts with label Centrifuge. Show all posts

Wednesday, March 21, 2012

Function and Uses of a medical Centrifuge

Medical centrifuges come in assorted sizes and apply to many separate applications, development them an very useful expedient either in a doctor's office, hospital environment, or laboratory.

Modern centrifuges are basically compact, made either of plastic or metal, and are visually appealing; they regularly sit on a counter top on rubber feet so they do not move while in operation. The bottom may be weighted to make it stable while in use. Size will resolve how many glass test tubes or vials it may hold at one time. They are controlled by a timer and have at least two speeds, low and high. Many also have the ability to keep the interior cool so when the appliance is working, particularly on high speed, the contents will remain cool instead of heating up as would regularly happen when the centrifugal force is applied.

Nuclear Reactor

There are many medical applications for a medical centrifuge together with studies of viruses, proteins, polymers, nucleic acids, and blood. They can cut off serum as well as from plasma from blood, and solids from liquids. The uses are many and not restricted to the medical field alone.

Having a timer is suitable when uses consist of extended periods of time required for disunion of ingredients. The high speed spin creates an synthetic gravity that, depending on the substance, will cut off the ingredients swiftly or slowly.

Medical centrifuges can spin at amazing speeds, especially the changeable speed models. They can produce from eight hundred revolutions per small (Rpm) up to a blazing two and a half million Rpm. Midpoint use and application for most centrifuges with a minimum of two speeds (low and high) are from two thousand Rpm up to sixty thousand Rpm. Most uses need the higher speeds but for shorter periods of time.

It is a discrepancy in density that causes most substances to cut off when run straight through a cycle in a medical centrifuge. The high speed units are called ultracentrifuges and these are ordinarily bench top units which need some means of fastening them down on the counter or bench top so they stay in place while in use. Uses for ultracentrifuges consist of the disunion of gases to resolve molecular weight of obvious liquids. They are put to use as a means of separating uranium 235 for nuclear reactors. The climatic characteristic requires strict operate in many of these applications due to sensitivity of the ingredients. They will become very hot at high revolutions which are unmistakably a form of friction.

While an Midpoint medical centrifuge may cost in any place from a few hundred to some hundred thousand dollars, there is one instance of an efficient expedient being created by chemists at a university which cost a mere two dollars to make. The expedient is basically an old fashioned egg beater to which was added plastic tubing held on by tape. It is capable of creating a low speed centrifugal force that unmistakably will cut off blood cells from plasma and has proven useful for straightforward laboratory tests in instances where no lab or equipment is available. It proves that human ingenuity can work many wonders.

Function and Uses of a medical Centrifuge

Tuesday, December 6, 2011

Uses of Centrifuge Machines

A centrifuge is an apparatus that is driven by an electric motor and works on the principle of sedimentation, where the centripetal acceleration produced by the rotational force of the machine, cause more dense substances to conclude in the bottom and the lighter ones on the top. The centrifugal machine does helps in separating the components of the liquid.

History of the machine

Nuclear Weapons

Benjamin Franklin is credited with the invention of a whirling arm apparatus that was used to conclude the drag. In 1864, Antonin Prantdl invented the first dairy centrifuge to cut off cream from milk. In 1879, Gustaf Laval demonstrated the first centrifugal separator that became commercially viable.

Types

There are 6 types of this device. Preparative, analytical, angle fixed, swing head, haematocrit, and continuous tubular centrifuge.

Preparative centrifugation is used to cut off organelles and molecules. They can cope large volumes of liquid. It uses the principle of differential centrifugation, which is based on the size of the particles. The sample should be homogenized. Sedimentation process depends on mass, shape, and partial specific volume of a macromolecule, as well as solvent density, rotor size and rate of rotation.

Density gradation centrifugation is a recipe to purify sub cellular organelles and macromolecules. Density gradient generated by placing layer after layer of gradient medium.

The desktop clinical centrifuges have a speed of nearby 3000 rpm, while higher speed models have rotation speed upto 25000 rpm. The ultra versions of the gismo have the top speed of 75000 rpm.

Uses of the device

• Centrifuges are most ordinarily used in chemistry, biology and biochemistry laboratories for isolating and separating suspensions of proteins, chemicals, etc. They vary in speed and capacities.
• Cenrtifuges are also used to cut off the isotopes, which are used in nuclear power, and nuclear weapon programs. Centrifuges used in these cases are known as Zippe type of centrifuges.
• In Geophysics, the centrifuges are used for stimulating blasts and earthquake phenomena.
• They are also used in sugar manufactures to cut off sugar from the mum liquor.
• industrial centrifuges are used in water and waste water treatments.
• They are used to cut off oil from the drilling fluid.
• In the dairy industry, they are used to cut off fats from the milk, that is used for production fat free products.
• In some cases, standalone centrifuges are used for drying clothes. The application is widely used in automated washing machines which are used for washing and drying clothes.

Uses of Centrifuge Machines