Product Attribute:
Applicationt:
Flygain
Production Description:
PTFE Beaker
1.Description
A stir bar is the magnetic bar placed within the liquid wihich provides the stirring
action.The stir bar's motion is driven by another rotating magnet or assembly of
electromagnets in the stirrer device, beneath the vessel containing the liquid.Stir
bars are typically coated in teflon, or less often in glass. Glass coatings are used for
liquid alkali metals (exceptlye,
which will eat through glass) and alkali metal solutions in ammonia. Both coatings
are chemically inert and do notcontaminate or react with the reaction mixture
they are in.They are bar shaped and often octagonal in cross-section (sometimes circular),
althougha variety of special shapes exist for more efficient stirring. Most stir bars have
a ridge around the center (called a pivot ring) on which they rotate. The smallest are
only a few millimeters long and the largest a few centimeters. A stir bar retriever is a separate magnet on the end of a long stick (usually coated with teflon) which can be used to remove
stir bars from a vessel.
2.Specification
1.material: inside alnico magnet, outside teflon
2.high remanence,high coercive force ,high energy
3.max working temperature: 350 degree centigrade