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Bel-Art Products Teflon (PTFE), Round Spinbar Magnetic Stir Bar, with Removable Pivot Ring

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Product Specifications
Item Shape
Round
Material Type
PTFE (Polytetrafluoroethylene)
Color Name
White
UNSPSC Code
41121802
Brand Name
Bel-Art Products

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Currently showing 1-18 of 18
Round, White, 1" Length, 3/8" Diameter B002VBW5OU yes $8.35 Buy Options
Round, White, 1" Length, 5/16" Diameter B002VBW5LS yes $6.40 Buy Options
Round, White, 1-1/2" Length, 3/8" Diameter B002VBW5PY yes $10.55 Buy Options
Round, White, 1-1/2" Length, 5/16" Diameter B002VBW5O0 yes $8.40 Buy Options
Round, White, 1-1/4" Length, 3/8" Diameter B002VBW5Q8 yes $8.90 Buy Options
Round, White, 1-1/4" Length, 5/16" Diameter B002VBW5OA yes $8.10 Buy Options
Round, White, 1-3/4" Length, 3/8" Diameter B002VBW5QS yes $11.40 Buy Options
Round, White, 1-3/4" Length, 5/16" Diameter B002VBW5OK yes $10.30 Buy Options
Round, White, 1-5/8" Length, 3/8" Diameter B002VBW5P4 yes $11.90 Buy Options
Round, White, 1/2" Length, 3/8" Diameter B002VBW5QI yes $7.80 Buy Options
Round, White, 2" Length, 3/8" Diameter B002VBW5PO yes $12.35 Buy Options
Round, White, 2" Length, 5/16" Diameter B002VBW5M2 yes $10.85 Buy Options
Round, White, 2-1/2" Length, 5/8" Diameter B002VBW5R2 yes $38.50 Buy Options
Round, White, 2-1/8" Length, 3/8" Diameter B002VBW5PE yes $13.60 Buy Options
Round, White, 3" Length, 1/2" Diameter B002VBW5MC yes $7.59 Buy Options
Round, White, 4" Length, 5/8" Diameter B002VBW5MM yes $41.18 Buy Options
Round, White, 5" Length, 5/8" Diameter B002VBW5MW yes $41.91 Buy Options
Round, White, 6" Length, 3/4" Diameter B002VBW5N6 yes $104.74 Buy Options

Key Features

  • Round, cylindrical shape provides better centering and creates less turbulence than a multisided shape
  • Teflon (PTFE) casing is chemically inert, can be used with corrosive chemicals, and helps reduce friction and wear while spinning
  • Removable pivot ring helps reduce vibration and wear during stirring, and it can be taken off for cleaning
  • Internal magnet made from alnico V, an alloy of aluminum, nickel, iron, and cobalt
  • Casing material is FDA approved for use in food, drug, and cosmetic applications

Product Description

The Bel-Art Scienceware Spinbar round stir bar with removable pivot ring has a white Teflon (PTFE) casing and an internal magnet made from alnico V (an alloy of aluminum, nickel, iron, and cobalt) for a range of laboratory stirring applications. The round, cylindrical shape provides better centering and creates less turbulence than a multisided shape. The magnet sits inside a Teflon (polytetrafluoroethylene, or PTFE) casing, which is chemically inert, can be used with corrosive chemicals, and helps reduce friction and wear while spinning. The bar has a removable pivot ring that reduces vibration and wear during stirring. The ring can be taken off for cleaning. The casing material is FDA approved for use in food, drug, and cosmetic applications.

Magnetic stir bars (sometimes called stirring bars, spin bars, or fleas) are used to stir a liquid or solution in biological, chemical, medical, and research laboratory applications. The stir bar is placed inside a container of liquid or solution that is seated on a magnetic stirrer (also called a magnetic mixer), which is a laboratory device that creates a rotating magnetic field using a rotating magnet or multiple stationary electromagnets. The rotating magnetic field causes the bar to spin, which stirs the liquid or solution. Stirring bars are offered in a variety of sizes and shapes, and they are encased in materials such as glass or plastic to help prevent contamination of the liquid or solution, to reduce friction, and to provide resistance to chemicals, abrasion, and heat. The bar may have a pivot ring or pivot point to minimize contact with the container, reduce friction, and improve its spinning. The size and shape of the container and the volume and viscosity of the liquid or solution to be stirred determine which stir bar shape, size, and casing will suit a particular application.

Bel-Art Products manufactures scientific products, including labware, testing equipment, and safety supplies, under the Bel-Art and Scienceware brands. The company, founded in 1946, is headquartered in Wayne, NJ.

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