Asbestos does not burn and insulates. If the Bunsen burner should tip over or the material being heated by the burner should drop, the asbestos will protect the tabel underneath.
Certain forms of asbestos have been found to be ealth hazards so now most often other minerals are used in the insulating mats in laboratories.
It should be placed on a Safety Heat Proof Mat on to a gauze and then on to a tripod.
A gauze mat is used below bunsen burners as it protects the tripod or surface which the bunsen burner might be on. It is most likely to be made of thick metal threads threaded into a mat or square. It is best if it is not touched during an experiment including a bunsen burner as it probably will result in mild to severe burns.
When the wire gauze is at room temperature, you can handle it with your hands. Once the wire gauze has been heated (say, by supporting a crucible over a Bunsen burner on a ring stand), you would need to use a set of tongs to handle the wire gauze (and the crucible and the ring of the ring stand if it needed to be dismantled immediately).
Gauze is used for bandaging wounds, cuts, etc.
A crucible is placed in a pipestem triangle placed on an iron ring while being heated. This supports the crucible while allowing the bottom of the crucible to be directly exposed to the flame of the Bunsen burner. There is no item that is used to distribute heat from a Bunsen burner when heating the bottom of a crucible. The bottom of the crucible is intended to be exposed to the direct flame of the Bunsen burner.
It should be placed on a Safety Heat Proof Mat on to a gauze and then on to a tripod.
gauze mat
A gauze mat is used below bunsen burners as it protects the tripod or surface which the bunsen burner might be on. It is most likely to be made of thick metal threads threaded into a mat or square. It is best if it is not touched during an experiment including a bunsen burner as it probably will result in mild to severe burns.
A wire gauze is placed on a tripod stand on top of a Bunsen burner.
The mat is called a wire gauze or a ceramic center. It helps to distribute the heat evenly and protect the glassware placed on top of the Bunsen burner from direct heat.
The wire gauze spreads the heat evenly from the Bunsen burner to the beaker, reducing the risk of hot spots and breakage. It also provides a stable surface for the beaker to rest on during heating.
Copper gauze stops the flame on a Bunsen burner by dispersing the heat across its surface quickly, lowering the temperature and preventing combustion. This prevents the flame from igniting any flammable gases that may be present in the laboratory.
Generally it is used with a ring stand and a ring. The wire gauze is placed on the rind, a beaker or flask is placed on the gauze, and heat is applied by a Bunsen burner.
A Bunsen burner typically sits on a heat-resistant mat called a "laboratory tripod" or a "retort stand" with a wire gauze mat on top. This arrangement helps to protect the work surface from heat damage and provides a stable platform for the Bunsen burner.
Wire gauze can be used to support a container (such as a beaker or flask) during heating. When the Bunsen burner flame is beneath it, with a tripod, the wire gauze helps to spread the flame (and heat) out evenly over the container. It is frequently used in combination with an iron ring and ring stand with a Bunsen burner underneath it (see the Related Questions for more information about an iron ring, ring stand, and Bunsen burner & tripod). A clay triangle serves a similar purpose, except that a clay triangle is used for a crucible instead.
The scientific symbol of a gauze used with a Bunsen burner is represented by a small grid-like square or circle with a pattern resembling a woven mesh. It typically shows a series of interconnected lines to suggest the thin metal mesh material of the gauze.
You can place a wire gauze on top of it and keep a safe distance away form the bunsen burner. Try not to perform anyexperiments while sitting down- it is safer while standing.