Neodymium Iron Boron (NdFeB) is the strongest of the permanent magnetic materials. Previously, Neodymium Iron Boron has not been available as a completely encapsulated Magnetic Stir Element. V&P is the only source of encapsulated NdFeB. We offer a high and a low temperature resistant form of the NdFeB which can be selected to fit your application. We also offer Samarium Cobalt (SmCo) rare earth magnets which are available for even higher-temperature applications. By way of comparison, Alnico magnets the most commonly used in magnetic stir bars, are much weaker at only 7 MGO. So if you need to stir viscous material, soil samples, wood chips, or particulates at high speeds or to grind nanoparticles with glass beads, this is the system for you.
The disc design of the VP 772D series makes them significantly more efficient at moving liquid and thereby mixing solution in the tumble mode. Selecting a disc that is slightly smaller than the inside diameter of the vessel to be stirred results in the most efficient stirring. To stir viscous material requires greater energy so we constructed these discs from Neodymium Iron Boron and encapsulated them with PVDF to make them inert.
The VP 772DP-N42-5-2 and VP 772DK-N42-5-2 (5 mm diameter x 1.7 mm thick) PVDF and PEEK encapsulated disc was designed to fit into 96 well microplates, deep well 96 well microplates and glass micro-tubes.
The VP 772DP-N42-8-2 (8 mm diameter x 1.8 mm thick) PVDF encapsulated disc was designed to fit into many vials. If your application requires a different diameter, let us know.
We also offer PVDF encapsulated stir bars and discs. For information on these stir bars and discs see this link Encapsulated Magnegic Stir Bars and discs.
Polyether ether ketone (PEEK) is a thermoplastic with excellent mechanical and
chemical resistance properties that are retained through higher temperature
applications. Because of these inherent properties, PEEK is an ideal material
for use as a magnetic stir bar in high mechanical stress induced applications
for its abrasion resistance or when chemical attacks are a concern.
Click here for detailed
information on the properties of PEEK.
PEEK is much superior to PVDF in grinding
applications or applications where glass beads or Zirconium
Oxide beads are used to make nano particles.
V&P is the first to offer this option with our new PEEK POWER Magnetic Stir
Bars. Made with PEEK-CLASSIX from Invibio.
Click here for detailed information on PEEK-CLASSIX.
Features of PEEK-CLASSIX:
US Pharmacopoeia Class VI / ISO 10993 Standards
withstand repeat autoclaving
Superior chemical resistance
Excellent wear and impact resistance
US Pharmacopoeia Class VI
ISO 10993-10 Sensitization