Stirring Bars, Magnetic

Photo of Flea Micro Spinbar® Magnetic Stirring Bars
Micro magnetic stirring bars are designed for stirring small volumes in vessels such as vials and tubes. They are particularly useful for environmental testing and life science applications in which small sample volumes need to be prepared and evaluated. PTFE coated.
Photo of Round Spinbar® Magnetic Stirring Bars w/Removable Ring
Spin bar® round magnetic stirring bars offer excellent centering and smooth running characteristics. A small removable pivot ring in the center adds to their versatility. The pivot ring minimizes the contact area of the bar to the vessel, reduces friction and lessens marring of plastic containers. PTFE coated. Items with ( *) indicate no pivot ring.
Photo of Bel-Art Polygon Spinbar Teflon Coated Magnetic Stirring Bars Without Pivot Ring

These stirbars have polygon multifaceted surfaces that add turbulence relative to similar smooth size cylindrical bars. Alnico magnet encapsulated in FDA Grade, USP Class VI Teflon® PTFE low friction coating that is durable and inert. Manufactured in a registered ISO 9001:2008 facility. Autoclave safe.

Photo of Color Coded Octagon Spinbar® Magnetic Stirring Bars
All PTFE coated octagon shaped SpinBar® magnetic bars are available in red, yellow or blue. Items marked with ( * ) do not have a spin ring.
Photo of Bel-Art Octagonal Spinbar Magnetic Stirring Bars

Spinbar® octagonal-faced magnetic stirring bars with molded pivot ring are most commonly used. Their interrupted profile provides greater surface area and added turbulence when compared to the smooth surface of cylindrical bars. The molded pivot ring aids in reducing friction and chattering. PTFE coated.

(Sample Photo Displayed. Individual items may differ from the image shown.)


Photo of Pyrex® Glass Round Magnetic Stirring Bars
Glass stirring bars are utilized when high temperature ranges (up to 274° C or 525° F) are necessary and when "zero absorption" of the stirred solution is preferred. The glass encapsulation of the magnet is completely smooth, making the bars easy to clean.
Photo of Egg Shaped Magnetic Stirring Bars
This egg-shaped Spinbar® Magnetic Stirring Bar provides its own pivot point without a separate ring or abrupt change in contour. Designed especially for use in round-bottom vessels, it spins unrestricted by the vessel contour. Most sizes have egg-shaped magnets. The two smallest sizes have cylindrical magnets with egg-shaped PTFE coating.
Photo of Giant Polygon Spinbar® Magnetic Stirring Bars
Heavy duty Spinbar® Magnetic Stirring Bars for use in stirring large volumes of fluid in vessels on large magnetic stirring machines. Will fit into minimum vessel neck diameter of 32 mm.
Photo of Circulus™ Magnetic Stirring Bars
The Circulus™ magnetic stirring bar offers fast mixing action, high turbulence, greater stability, and less drifting at higher speeds. Ideal for all "problem" liquids, highly viscous mixtures, metal particles in fluids, and containers with round or convex bottoms. All sizes have solid PTFE end disks 20mm in diameter and a bar diameter of 8mm.
Photo of Spinfin® Magnetic Stirring Bars
The Spinfin® Magnetic Stirring Bar agitates liquids in round-bottom test tubes and flasks, where other stirring bars cannot be used. It maintains its position in a vessel and will not wobble.
Photo of Spinring® Magnetic Stirring Bars
Spinbar® Magnetic Stirring Bar with a removable stabilizing ring to keep it centered in the vessel. Creates a deep vortex without splashing or chattering and resists spinout.
Photo of Spinwedge® Magnetic Stirring Bars
This wedge-shaped magnetic stirring bar is designed to plow up sediment for thorough dispersion. The sharply angled broad face also provides strong mixing action, perfect for viscous solutions.
Photo of Spinvane® Triangular Magnetic Stirring Bars
Solid PTFE shaped vanes with cross-mounted, molded-in magnets. Triangular shape permits rotation in small conical-shaped tubes and micro vials.
Photo of Spinstar® Magnetic Stirring Bars
The star-shaped Spinstar® Magnetic Stirring Bar creates a deep vortex at relatively slow speeds. It fits exactly the inside diameter of the beaker indicated.
Photo of Spinplus® Magnetic Stirring Bars
Add speed and efficiency to your mixing requirements. The "+" shape creates a deep vortex and provides stable, quiet operation.
Photo of Spinvane® Magnetic Stirring Bar
Half-round tapered shape, fits conical bottom centrifuge tubes. Can be trimmed to fit.
Photo of Spinvane® Half-Round Magnetic Stirring Bar
Half-round shape fits round bottom of 16mm O.D. test tubes. 13.7mm wide.
Photo of BEL-ART F37185-0000 SPINBOX

Color-coded, octagon shaped stirring bars in storage box - 24 assorted bars with pivot ring. One each in yellow, red and blue, in the 8 following sizes: (1/2" x 1/8"), (5/8" x 5/16"),(7/8" x 5/16"),(1/2" x 5/16"), (1" x 5/16"),(11/2" x 5/16"),(2" x 5/16"),(3" x 1/2").

Photo of Spinpak® Octagonal Stirring Bar Assortment
Six octagon Spinbar® Magnetic Stirring Bars, PTFE coated, with pivot ring. Contains two of each: (1" x 5/16") (1-1/2" x 5/16") (2" x 5/16").
Photo of Spinbox® Octagonal 12 Stirring Bar Assortment
Octagon shaped stirring bars in storage box - 12 Assorted Bars (Standard & Micro). 12 standard bars with pivot ring: 2 each of the following sizes: Inches (1/2" x 5/16"); (5/8" x 5/16"); (1" x 3/8"); (1-1/2" x 3/8"); (2" x 3/8"); (2-1/2" x 3/8"). 2 micro flea bars of each size: 7 x 2mm and 10 x 3mm.