What is the use of stirring rod in laboratory apparatus?

What is the use of stirring rod in laboratory apparatus?

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.

How does a stir bar work?

How does it work? A stir bar magnet is placed inside a container, immersed in the fluid. A separate magnet (or magnets) is placed underneath the container, so that it attracts to the stir bar magnet. If the magnets are close enough, the stir bar magnet spins inside the container.

How do you stir a solution?

Stirring

1. Move the bottom of the flask closer to the stir plate.
2. Use a bigger stir bar.
3. Use a larger or more powerful stir plate (not all plates are created equal).
4. If your stir bar gets stuck somehow, pick up the flask and swirl it until the bar is free, or pry it free with a pipette or spatula.

Why must glasswares be handled with care?

Proper handling of glassware can reduce the risk of injury and accident. Always use two hands carrying any glassware (position one hand under the glass for support). Appropriate glove should be worn whe there is a risk of breakage (e.g. inserting a glass rod), chemical contamination, or thermal hazard.

Why is immediate rinsing of glasswares important after use?

Glassware should be washed as soon as possible after use to avoid caking of residue and it is important not to let soiled glassware dry out. If immediate cleaning is not possible, the glassware should be put to soak in water.

What is the purpose of a glass stirring rod?

Stirring rods are important because stirring a solution, which is also known as agitation, causes a reaction to happen faster. Glass rods are also used to spread liquid substances on a solid surface. It is preferable to a metal rod because glass is not a good conductor of heat and metal is. Metal has free electrons.

How do you use a stirring rod to transfer liquid?

Also Know, how do you transfer liquid using a stirring rod? liquid into a beaker, use a stirring rod to avoid drips and spills. Hold the stirring rod against the lip of the reagent bottle. Estimate the amount of liquid you need, and pour this amount along the rod, into the beaker. In this way, what is the purpose of a stirring rod?

What is the purpose of a stir rod in decanting?

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?

What is the purpose of glass rod in pouring liquid?

Correspondingly, what is the purpose of the glass rod in pouring liquid? Glass rods are used when pouring liquids in order to avoid spills. 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.