What is a glass stirring rod used for in chemistry?

A glass stirring rod is used to stir or mix solutions. One of their main uses is to “scratch” the side of glassware (such as an Erlenmeyer Flask) to start the crystallization process in many experiments.

What is a stirring rod with rubber policeman?

Rubber policeman attached to glass rod facilitates scraping and mixing. Stirring rods are made of soft flint glass with both ends fire polished and rounded. Policemen are made of natural rubber.

What is the main use of glass rod?

Glass rods are sometimes used as stirrers in laboratory environments. Glass rods are often used to spread liquids evenly onto something. An example would be to coat glass surfaces with liquids to look at them under a microscope.

What is policeman used as glassware?

The Silicon Rubber Policeman for glass stirring rods has a dual purpose. The most obvious is that it increases the surface area of the stir rod and thereby its functionality but less apparent and more important is that it also protects your glassware from scratches.

What is a rubber policeman used for in chemistry?

A policeman is a hand-held flexible natural-rubber or plastic scraper. The common type of it is attached to a glass rod and used in chemical laboratories to transfer residues of precipitate or solid on glass surfaces when performing gravimetric analysis.

What is crucible chemistry?

A crucible is a ceramic or metal container in which metals or other substances may be melted or subjected to very high temperatures. While crucibles were historically usually made from clay, they can be made from any material that withstands temperatures high enough to melt or otherwise alter its contents.