What is the function of stirring rod in laboratory?

What is the function of stirring rod in laboratory?

A glass stirring rod, glass rod, stirring rod or stir rod is a piece of laboratory equipment used to mix chemicals and liquids for laboratory purposes. They are usually made of solid glass, about the thickness and slightly longer than a drinking straw, with rounded ends.

What is the purpose of stirring?

Stirring allows for the homogenization of mixable liquids and the stir-up of solid particles in liquids. Differences in temperature or concentration are balanced more efficiently during stirring. Additionally, the stirring of liquids speeds up the dissolution process and increases the speed of chemical reactions.

Why do you decant as much of the supernatant liquid?

DECANTATION AND WASHING OF PRECIPITATES We loosely refer to this operation as decantation. Because the precipitate separated from the supernatant liquid by this technique will be wet with decantate, it is necessary to wash the precipitate free of contaminating ions.

What is use of beaker?

Beakers are useful as a reaction container or to hold liquid or solid samples. They are also used to catch liquids from titrations and filtrates from filtering operations. Laboratory Burners are sources of heat. Burets are for addition of a precise volume of liquid.

How do you transfer liquid chemicals?

To transfer a liquid (or powder) into a container simply place the funnel on top of the container with the tube inserted inside. Then take the package or container with the liquid or powder and holding it above the funnel slowly begin to pour the contents into the funnel.

How do you clean a stirring rod?

It may dissolve and cause contamination. If you need to manipulate a solid, use a rubber policeman on a stirring rod. Cleanliness is essential for a successful procedure. All apparatus must be cleaned well with soap and a brush, rinsed with tap water, and finally rinsed with distilled water.

What is the purpose of using a stirring rod in the pouring off of liquid through the funnel?

Uses. A stirring rod is used for mixing liquids, or solids and liquids. Stir rods are used as part of proper laboratory technique when decanting supernatants because the contact helps to negate the adhesion between the side of the glassware and the supernatant that is responsible for the liquid running down the side.

Is agitation and stirring the same?

is that stir is the act or result of stirring; agitation; tumult; bustle; noise or various movements or stir can be (slang) jail; prison while agitation is the act of agitating, or the state of being agitated; the state of being moved with violence, or with irregular action; commotion.

What is supernatant liquid?

The supernatant is the clear liquid that lies above the solid residue after centrifugation, precipitation, crystallization or settling. The liquid is normally free of precipitate and has a lower density. Supernatant is also known as supernate.

Why are stirring rods used in transferring liquids from one container to another?

What is the purpose of using stir rod in the pouring liquid?

Stir rods are used as part of proper laboratory technique when decanting supernatants because the contact helps to negate the adhesion between the side of the glassware and the supernatant that is responsible for the liquid running down the side. Correspondingly, what is the purpose of the glass rod in pouring liquid?

Which is an example of a stirring rod?

Example of a stirring rod A glass stirring rod, glass rod, stirring rod or stir rod is a piece of laboratory equipment used to mix chemicals. They are usually made of solid glass, about the thickness and slightly longer than a drinking straw, with rounded ends.

Why do you need a stir rod for glass?

Stir rods are used as part of proper laboratory technique when decanting supernatants because the contact helps to negate the adhesion between the side of the glassware and the supernatant that is responsible for the liquid running down the side. Using a stir rod also grants more control over the rate of flow,…

Why do you use a stirring rod in a beaker?

When a glass rod is laid against the pouring edge of a beaker, it causes the liquid inside to flow along the rod and down into the receiving vessel instead of splashing over the lip. Additionally, how do you transfer liquid using a stirring rod? liquid into a beaker, use a stirring rod to avoid drips and spills.