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

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

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Price  
All All All      
Currently showing 1-18 of 18
Round, White, 1" Length, 3/8" Diameter 1 371110138 B002VBW5OU 1 $12.30 Buy Options
Round, White, 1" Length, 5/16" Diameter 1 371110001 B002VBW5LS 1 $7.09 Buy Options
Round, White, 1-1/2" Length, 3/8" Diameter 1 371111128 B002VBW5PY 3 $14.03 Buy Options
Round, White, 1-1/2" Length, 5/16" Diameter 1 371110112 B002VBW5O0 1 $11.93 Buy Options
Round, White, 1-1/4" Length, 3/8" Diameter 1 371111148 B002VBW5Q8 1 $11.80 Buy Options
Round, White, 1-1/4" Length, 5/16" Diameter 1 371110114 B002VBW5OA 2 $12.48 Buy Options
Round, White, 1-3/4" Length, 3/8" Diameter 1 371111348 B002VBW5QS 1 $10.60 Buy Options
Round, White, 1-3/4" Length, 5/16" Diameter 1 371110134 B002VBW5OK 1 $10.73 Buy Options
Round, White, 1-5/8" Length, 3/8" Diameter 1 371110158 B002VBW5P4 1 $11.10 Buy Options
Round, White, 1/2" Length, 3/8" Diameter 1 371111238 B002VBW5QI 1 $10.38 Buy Options
Round, White, 2" Length, 3/8" Diameter 1 371110238 B002VBW5PO 1 $11.45 Buy Options
Round, White, 2" Length, 5/16" Diameter 1 371110002 B002VBW5M2 1 $15.12 Buy Options
Round, White, 2-1/2" Length, 5/8" Diameter 1 371112125 B002VBW5R2 2 $40.51 Buy Options
Round, White, 2-1/8" Length, 3/8" Diameter 1 371110218 B002VBW5PE 1 $12.65 Buy Options
Round, White, 3" Length, 1/2" Diameter 1 371110003 B002VBW5MC 5 $26.97 Buy Options
Round, White, 4" Length, 5/8" Diameter 1 371110004 B002VBW5MM 2 $45.12 Buy Options
Round, White, 5" Length, 5/8" Diameter 1 371110005 B002VBW5MW 1 $43.54 Buy Options
Round, White, 6" Length, 3/4" Diameter 1 371110006 B002VBW5N6 1 $106.44 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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