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Bel-Art Scienceware 371090029 PTFE Disposable Polygon Spinbar Magnetic Stirrer Bar, 1" x 5/16" Size

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ASIN B002VBW5RC

Product Specifications
Part Number
371120001
Number of Items
100
Outside Diameter
0.313  inches
Overall Length
1  inches
Size Name
Cylindrical, Yellow, 1 x 5/16 inches
Specification for this product family (See all  products)
Item Shape
Polygon
Material Type
PTFE (Polytetrafluoroethylene)
Color Name
White
UNSPSC Code
41121802
Brand Name
Bel-Art Products

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Key Features

  • Polygonal shape is smoother than an octagonal shape and creates more turbulence and a stronger vortex than a round, cylindrical shape
  • Teflon (PTFE) casing is chemically inert, can be used with corrosive chemicals, and helps reduce friction and wear while spinning
  • Smooth surface provides quicker cleanup and less risk of cross-contamination than bars with pivot rings and allows the bar to spin on the bottom of the container to disperse light sediment and air bubbles
  • Internal magnet made from alnico V, an alloy of aluminum, nickel, iron, and cobalt
  • Single-use stir bar can be disposed of after working with hazardous substances or when contamination is a concern

Package Details

Shipping Weight: 0.8 pounds
Package Size: 4.9 x 3.5 x 1 inches

Product Description

The Bel-Art Scienceware Spinbar disposable polygonal stir bar 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 polygonal shape is smoother than an octagonal shape and creates more turbulence and a stronger vortex than a round, cylindrical 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's smooth surface provides quicker cleanup and less risk of cross-contamination than bars with pivot rings and allows the bar to spin on the bottom of the container for dispersing light sediment and air bubbles. This single-use stir bar can be disposed of after working with hazardous substances or when contamination is a concern. 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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