3-Pack - 50mm Stir Bar for Magnetic Stirrer


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Product Overview

3-Pack 50mm Magnetic Stir Bar Set - PTFE Octagon with Pivot Ring - Superior Mixing Performance for Magnetic Stirrer Plates

Ensure precise and efficient mixing with our 3-Pack 50mm Magnetic Stir Bar Set. These PTFE-coated octagon stir bars, each featuring a pivot ring, are designed to provide superior performance for all your laboratory needs. Ideal for chemistry applications, these magnetic stir bars are compatible with most magnetic stirrers and are perfect for use in research, educational, and industrial settings.

Key Features

  • Superior Mixing Performance: The octagon shape and pivot ring ensure optimal turbulence and mixing efficiency with your magnetic stirrer.
  • Durable PTFE Coating: Resistant to chemicals and high temperatures, the PTFE coating provides long-lasting performance and easy cleaning for your magnetic stir bar.
  • Versatile Use: Suitable for a wide range of applications, including chemistry, biology, and food science, these stir bars are ideal for various stirring needs.
  • Optimal Size: The 50mm length makes these magnetic stirring bars ideal for use in medium to large containers.


  • Material: PTFE (Polytetrafluoroethylene)
  • Shape: Octagon with pivot ring
  • Length: 50mm
  • Quantity: 3-pack


  • Chemistry and Biology Labs: Perfect for mixing solutions, reagents, and samples in various chemical and biological experiments using a magnetic stirrer.
  • Industrial and Research Settings: Suitable for industrial processes and research projects requiring consistent and reliable stirring with magnetic stir bars.
  • Food and Beverage Industry: Ideal for ensuring homogeneous mixing in food and beverage preparations, maintaining food safety standards with food-safe magnetic stir bars.


How do stir bars work?

Magnetic stir bars, or stir bars, are placed inside a container with the liquid to be mixed. When placed on a magnetic stirrer, the external magnetic field causes the magnetic stir bar to rotate, creating a vortex that mixes the contents efficiently.

What are stir bars made of?

Our stir bars are made of a strong magnetic core coated with PTFE, ensuring chemical resistance and durability, making them perfect for magnetic stir bar chemistry applications.

Where to buy magnetic stir bars?

You can purchase our other high-quality magnetic stir bars directly from our store at Obtainium Science & Industry Surplus.

Invest in our 3-Pack 50mm Magnetic Stir Bar Set for reliable and efficient mixing in all your laboratory applications. Order today and experience superior mixing performance with Obtainium Science & Industry Surplus.


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Item was as described, and very fast delivery!

5 stars across the board for every seller rating category, and I would buy from this seller again. And per my request, the capacitors were also very well packed for safe delivery.

Bruce B.

Obtainium have been a very helpful seller to me.

In recent times I have had a few items go astray enroute to my address in Australia. This seller was most helpful & encouraging, regarding the onward tracking & eventual safe delivery of this item. This item's arrival in good condition was a joy to me as, it was a rare part that fitted my military comms. Well done seller. I would gladly recommend this seller to all potential buyers.

Jean-Pierre H.

The item was as described and in good and working condition.

Delivered as promised. I would order again if store has anything else I may need. THANK YOU!

Robert L.

Super Duper Fast Shipping.

Item As Described. Packaged Nicely, What A Seller.

Wayne L.

Product shipped quickly and arrived in good shape

J. Fong


The instrument was well packed. It is in extremely good condition. It passed all preliminary tests.

Raymond W.

Item looks better than described, looks brand new and works great.

My old buffer was 50 years old and I sent it to buffer heaven, thanks.

Mike H.

Just what the doctor ordered.

Good supply and price. Thxs

Ralph M.

As advertised. Would buy from again.

S. Scafer

Perfect transaction, pleasure to deal with.

M. Dante