Nova-Tech Bel-Art Magnetic Stirring Bars Selection & Use Guide - Manual (Page 4)

Pyrex ® Spinbar ® glass Stirring Bars are completely encapsulated in
Pyrex ® glass. Glass stirring bars are useful for high temperature
applications in excess of 225˚C (437˚F) where Teflon ® PTFE is not
stable. Glass bars also offer “zero absorption” of the stirred solution.
Page 377.
Spinstar ® magnetic stirring bars create a deep mixing vortex at relatively
slow speeds. Designed to fit the inside diameter of most commonly-used
beakers, the Spinstar
® stirring bar is perfect for applications requiring
slow, thorough mixing. Page 382.
Spinplus ® magnetic stirring bars add speed and efficiency to mixing
operations. The “+” shape creates a deep vortex and provides stable,
quiet operation. Page 382.
STirring
373
STirring
Saturn Spinbar ® Magnetic Stirring Bars easily stir powders into
solutions without getting stalled. A prominent sphere in the middle of the
bar elevates the stirring bar arms during rotation and consequently
diminishes the surface contact area, permitting the magnet to spin freely
without stalling. For use in round or flat bottom vessels. Page 383.
Spinfin ® magnetic stirring bars can be used in round bottom flasks as
well as rounded vessels such as test tubes or cylinders. Page 386.
Spinring ® stirring bars provide maximum stabilization of the magnetic
stirring bar with the addition of a “hoop” around a standard octagonal bar.
The friction fit of the “hoop” and bar allows them to spin as a unit.
By presenting a greater surface area and wider profile, “spin out” is
virtually eliminated. This particular arrangement is best suited for larger
open-neck vessels, such as buckets and beakers. Page 382.
Spinvane ® magnetic stirring bars are designed for test tubes, micro
vials and conical bottom centrifuge tubes. Each style is manufactured
for a specific size tube, but can be modified if needed without
affecting the magnet. Page 387.
Spinwedge ® magnetic stirring bars provide strong turbulence at
fairly low speeds and are well suited for churning sediment or
dissolving salts. Page 381.
round magnetic stirring bars with tapered ends have a naturally centered
pivot point, eliminating the need for a separate pivot ring. Smooth surface
and the slightly raised ends on these bars facilitate efficient movement
through solutions. Page 376.