Tongs differ in shape are designed to pick up laboratory items including, hot evaporating dishes, beakers, crucibles, and other laboratory apparatuses. The main type of laboratory tongs are Crucible tongs, Beaker tongs, and Utility tongs.
What is a beaker tongs used for?
Beaker tongs are used to hold and move beakers containing hot liquids.
What is the difference between a test tube holder and a crucible Tong?
Crucible tongs are used for removing the lids from crucibles, transferring evaporating dishes or picking small objects out of a reaction container. Beaker tongs are used for carrying beakers, evaporating dishes or flasks. Test tube holders are used for lifting, carrying or heating test tubes.
What do beaker tongs look like?
Use beaker tongs to handle hot beakers. These nickel-plated steel tongs are 25 cm (10″) long and have plastic coated jaws that open up to 11 cm (4.5″). They can hold beakers ranging from 100 ml up to 1000 ml.
Why is the crucible tongs shaped that way?
Crucible tongs are shaped like a pair of scissors, the only difference is that a regular pair of scissors have sharp blades, while crucible tongs have a pair of metal blades that are blunt. The blades of the crucible tongs are curved to facilitate proper grip on the object.
Why should crucible tongs and not fingers?
Crucible tongs are designed to hold the crucible while it is hot. It ensures that the user does not get burned while simultaneously causing the user from contaminating the sample with their oily fingers.
What are beaker tongs made of?
Laboratory Tongs are everyday lab essential tools and made of nickel-plated steel with a riveted joint.
Why do beaker tongs have rubber coating?
Rubber and cork stoppers are used to close test tubes and flasks, thus avoiding spillage or contamination. Containers should NEVER be heated when there is a stopper in place – pressure will build up, and an explosion could occur.
What is the classification of tongs?
Tongs consisting of a single band of bent metal, as in sugar tongs, most asparagus tongs (which are no longer common) and the like. Sugar tongs are usually silver, with claw-shaped or spoon-shaped ends for serving lump sugar.
What is a beaker?
Beaker – A beaker is a glass container with a flat bottom and a small spout for pouring. It is used in the chemistry lab for mixing, heating, and stirring liquids. Beakers come in various sizes and are shaped like a cylinder.
How do you handle a beaker?
Never carry a beaker by its side. Always use two hands carrying any glassware (position one hand under the glass for support).
Ground-glass joints are crafted for a perfect fit and may stick sometimes.
Never force a joint free. Lubricate surfaces or use a Teflon sleeve.A heat gun can gently loosen the joints.
What is a clay triangle used for?
Clay triangle
A triangular device made of heat-resistent clay. Used to hold crucibles and porcelain dishes heated by a Bunsen burner. Distributes heat evenly over the surface of objects it holds.
