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Bel-Art Scienceware Teflon (PTFE), Octagonal Spinbar Magnetic Stir Bar, with Pivot Ring

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Product Specifications
Item Shape
Octagon
Material Type
PTFE (Polytetrafluoroethylene)
Color Name
White
Brand Name
Scienceware

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Currently showing 1-16 of 16
Cylindrical, White, 1" Length, 3/8" Diameter 1 371100138 B002VBW5HW 352 $6.50 Buy Options
Cylindrical, White, 1-1/2" Length, 1/2" Diameter 1 371101122 B002VBW5JA 2 $18.96 Buy Options
Cylindrical, White, 1-1/2" Length, 3/8" Diameter 1 371101128 B002VBW5JK 75 $7.70 Buy Options
Cylindrical, White, 1-1/2" Length, 5/16" Diameter 1 371100112 B002VBW5HC 95 $5.90 Buy Options
Cylindrical, White, 1-1/8" Length, 5/16" Diameter 1 371100118 B002VBW5HM 40 $5.50 Buy Options
Cylindrical, White, 1-3/8" Length, 3/8" Diameter 1 371101388 B002VBW5KO 11 $7.70 Buy Options
Cylindrical, White, 1-5/8" Length, 5/16" Diameter 1 371100158 B002VBW5I6 14 $7.00 Buy Options
Cylindrical, White, 1-7/8" Length, 3/8" Diameter 1 371100178 B002VBW5IG 9 $9.70 Buy Options
Cylindrical, White, 1/2" Length, 3/8" Diameter 1 371101238 B002VBW5K4 10 $5.50 Buy Options
Cylindrical, White, 2" Length, 3/8" Diameter 1 371100238 B002VBW5J0 14 $10.08 Buy Options
Cylindrical, White, 2" Length, 5/16" Diameter 1 371100002 B002VBW5G8 49 $7.30 Buy Options
Cylindrical, White, 2-1/2" Length, 3/8" Diameter 1 371102128 B002VBW5KY 14 $11.75 Buy Options
Cylindrical, White, 2-1/2" Length, 5/16" Diameter 1 371100212 B002VBW5IQ 15 $10.65 Buy Options
Cylindrical, White, 3" Length, 1/2" Diameter 1 371100003 B002VBW5GI 3 $19.92 Buy Options
Cylindrical, White, 5/8" Length, 3/8" Diameter 1 371105838 B002VBW5L8 1 $6.30 Buy Options
Cylindrical, White, 7/8" Length, 3/8" Diameter 1 371107838 B002VBW5LI 8 $6.50 Buy Options

Key Features

  • Octagonal shape creates more turbulence and a stronger vortex than a round, cylindrical shape or a polygonal shape
  • Teflon (PTFE) casing is chemically inert, can be used with corrosive chemicals, and helps reduce friction and wear while spinning
  • Built-in pivot ring helps reduce vibration and wear during stirring
  • 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 octagonal stir bar with built-in 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 octagonal shape creates more turbulence and a stronger vortex than a round, cylindrical shape or a polygonal 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. A built-in pivot ring minimizes contact between the bar and the container to help reduce vibration and wear during stirring. 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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