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Bel-Art Products Teflon (PTFE), Polygonal Spinbar Magnetic Stir Bar, without Pivot Ring

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

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Currently showing 1-19 of 19
1" Length, 3/8" Diameter, Without Pivot Ring B002VBW62Q yes $6.45 Buy Options
1-1/2" Length, 3/8" Diameter, Without Pivot Ring B002VBW662 yes $7.65 Buy Options
1/2" Length, 5/16" Diameter, Without Pivot Ring B002VBW608 yes $5.30 Buy Options
10mm Length, 6mm Diameter, Without Pivot Ring B002VBW5ZO yes $5.85 Buy Options
12mm Length, 5mm Diameter, Without Pivot Ring B002VBW66C Usually ships in 4 to 7 weeks $5.25 Buy Options
15mm Length, 6mm Diameter, Without Pivot Ring B002VBW60I yes $6.10 Buy Options
2" Length, 3/8" Diameter, Without Pivot Ring B002VBW5Z4 yes $10.25 Buy Options
2-1/2" Length, 1/2" Diameter, Without Pivot Ring B002VBW66M yes $20.95 Buy Options
20mm Length, 8mm Diameter, Without Pivot Ring B002VBW612 yes $6.35 Buy Options
25mm Length, 8mm Diameter, Without Pivot Ring B002VBW61M yes $6.45 Buy Options
3" Length, 1/2" Diameter, Without Pivot Ring B002VBW5ZE yes $21.23 Buy Options
30mm Length, 8mm Diameter, Without Pivot Ring B002VBW61W yes $6.80 Buy Options
40mm Length, 8mm Diameter, Without Pivot Ring B002VBW630 yes $7.65 Buy Options
5/8" Length, 5/16" Diameter, Without Pivot Ring B002VBW644 yes $4.95 Buy Options
50mm Length, 8mm Diameter, Without Pivot Ring B002VBW63A Usually ships in 4 to 7 weeks $2.34 Buy Options
60mm Length, 7mm Diameter, Without Pivot Ring B002VBW64E yes $2.39 Buy Options
7/8" Length, 3/16" Diameter, Without Pivot Ring B002VBW66W yes $5.30 Buy Options
70mm Length, 10mm Diameter, Without Pivot Ring B002VBW64Y yes $14.30 Buy Options
80mm Length, 10mm Diameter B002VBW65S Usually ships in 4 to 7 weeks $14.70 Buy Options

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
  • Casing material is FDA approved for use in food, drug, and cosmetic applications

Product Description

The Bel-Art Scienceware Spinbar 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. 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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