PTFE Magnetic Stir Bar Retriever Scientific Experiments Retriever Feature:
Item No. MSB-PR series
Material Polytetrafluoroethylene (PTFE)
Color White
Shape Cylindrical with not Pivot Ring
Size Custom
Ideal for retrieving magnetic stir bars safely from solutions
Magnet encapsulated in PTFE that makes it durable and easy to clean
Chemical resistant, acid and alkali resistant, and corrosive resistant. Magnetic Stir Rod Laboratory Bar
Warranty: 1-year limited warranty; if received damaged, please contact us immediately; we will solve it until satisfied
If you use a lab-quality stir-plate, be sure to check what type of magnet is used inside. A neodymium magnet is the strongest type of permanent magnet, and typically works best with these strong Stir Bars. A ceramic or Alnico magnet inside the stir-plate is much weaker than a neodymium magnet. While it will still work with the neodymium stir bars shown here, it is possible to demagnetize the ceramic or Alnico magnet inside the stir-plate.
NEW Stir Bar Retrievers
Magnet permanently embedded in PTFE rod
Ideal for retrieving magnetic stir bars from particularly sensitive or corrosive liquids
Item # Description
MPSBR150 PTFE Stirring Bar Retriever, Length 150 mm
MPSBR200 PTFE Stirring Bar Retriever, Length 200 mm
MPSBR250 PTFE Stirring Bar Retriever, Length 250 mm
MPSBR300 PTFE Stirring Bar Retriever, Length 300 mm
MPSBR350 PTFE Stirring Bar Retriever, Length 350 mm
MPSBR400 PTFE Stirring Bar Retriever, Length 400 mm
MPSBR500 PTFE Stirring Bar Retriever, Length 500 mm
A very powerful force between drive and stirrer magnet can result in a braking effect. Due to the pressure of the stirrer magnet on the bottom of the vessel, the speed of rotation is reduced and rotation can even be prevented. Micro Magnetic Induction Stirrers & Hotplate Stirrers
In general, no advice for or against a certain stirring bar form can be given. In case of doubt, a test of different stirring bars under your own conditions may be helpful.
The second part of this stirring system is the magnetic drive that consists in its simplest form of a simple, speed controlled induction motor or a stepper motor. In some cases the motor incorporates automatic reversing to improve mixing. Normally, the drive magnet is a simple square bar magnet, a U-magnet or a composite SSMCmagnet. Its rotation induces rotation of the stirrer magnet in the liquid. The designated speed can be adjusted by an incorporated speed control.
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