All Photos(8)



SP Bel-Art® Spinbar® magnetic stir bar

octagonal blue PTFE-coated, L × diam. 3 in. (76.2 mm) × 0.5 in. (12.7 mm)

Sign Into View Organizational & Contract Pricing

Spinbar® magnetic stir bar


octagonal blue PTFE-coated


Bel-Art F37109-0033

L × diam.

3 in. (76.2 mm) × 0.5 in. (12.7 mm)

Compare Similar Items

View Full Comparison

Show Differences

1 of 4

This Item

Bel-Art F37109-0033


Bel-Art F37109-0020


Bel-Art F37109-0032


Bel-Art F37109-0034

L × diam.

3 in. (76.2 mm) × 0.5 in. (12.7 mm)

L × diam.

1.5 in. (38.1 mm) × 0.3125 in. (8 mm)

L × diam.

3 in. (76.2 mm) × 0.5  in. (12.7 mm)

L × diam.

12.7 in. × 3.2 in.

General description

  • Spinbar® magnetic stir bar is used in conjunction with a magnetic stirring plate for uniform, consistent, and thorough mixing of chemical solutions.
  • Alnico magnet encapsulated in durable and inert FDA grade polytetrafluoroethylene (PTFE) low friction coating.
  • Multi-faceted-shaped bars provide a greater surface area and added turbulence for more vigorous, thorough mixing.
  • Autoclave safe.
Octagon magnetic stirring bars with integral pivot ring are the most commonly used shape. Choose from red, yellow or blue.

Features and Benefits

  • Alnico magnet encapsulated in FDA Grade, USP Class VI PTFE® brand PTFE Coating – Superior Chemical Compatibility
  • Interrupted profile provides greater surface area and added turbulence when compared to the smooth surface of cylindrical bars
  • Pivot ring aids in reducing friction and chattering
  • Autoclavable
  • Manufactured in a registered ISO 9001:2015 facility, as verified by SGS certification

Legal Information

Bel-Art is a registered trademark of SP Scienceware, a division of SP
Spinbar is a registered trademark of SP Scienceware, a division of SP
Teflon is a registered trademark of E. I. du Pont de Nemours and Company

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

Already Own This Product?

Documents related to the products that you have purchased in the past have been gathered in the Document Library for your convenience.

Visit the Document Library

Difficulty Finding Your Product Or Lot/Batch Number?

Product numbers are combined with Pack Sizes/Quantity when displayed on the website (example: T1503-25G). Please make sure you enter ONLY the product number in the Product Number field (example: T1503).


Product Number
Pack Size/Quantity

Additional examples:





enter as 1.000309185)

Having trouble? Feel free to contact Technical Service for assistance.

Lot and Batch Numbers can be found on a product's label following the words 'Lot' or 'Batch'.

Aldrich Products

  • For a lot number such as TO09019TO, enter it as 09019TO (without the first two letters 'TO').

  • For a lot number with a filling-code such as 05427ES-021, enter it as 05427ES (without the filling-code '-021').

  • For a lot number with a filling-code such as STBB0728K9, enter it as STBB0728 without the filling-code 'K9'.

Not Finding What You Are Looking For?

In some cases, a COA may not be available online. If your search was unable to find the COA you can request one.

Request COA

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service