Rare Earth Magnetic Spinbars
Reduce frequency of spinout in viscous solutions with Samarium Cobalt magnets that offer 3X the magnetic strength.
Stirring & Mixing
Streamline Your Sample Prep with Mixing Tools Designed for Maximum Efficiency and Chemical Resistance.
Product Categories
Mixers & Stirrers
Magnetic Stirbars
High-performance rare earth and standard magnetic stirbars for reliable sample homogenization in any vessel size.
Stirbar Accessories
Retrieval wands, cleaning brushes, and storage solutions designed to keep your stirbar workflow efficient.
Non-magnetic Stirring
Manual and mechanical overhead stirring tools for high-viscosity applications where magnetic stirring isn't suitable.
Mechanical Mixers & Stirrers
Overhead stirrers and digital mixers engineered for powerful, consistent mixing in large volumes or dense materials.
Discover Featured Products
Rare Earth – Samarium Cobalt Spinbar Octagon Magnetic Stirring Bars
Reduce frequency of spinout in viscous solutions or when stirring at high speeds.
Spinbox Magnetic Stirring Bar Assortments
These stirbar assortments come in a convenient storage box and provide instant availability of these highly popular Teflon® PTFE encapsulated Alnico magnets.Choose from Octagon, Cylindrical, Polygon, Micro, Egg-Shaped or Spinplus® shaped assortmentsFDA Grade, USP Class VI Teflon® PTFE low friction coating – Superior Chemical CompatibilityManufactured in a registered ISO 9001:2015 facility, as verified by SGS certificationAutoclavableTEFLON® is a registered trademark of The Chemours Company FC LLC and used under license by Bel-Art Products, Inc.
SP Bel-Art is proud to sell through our distribution partners.
Find Yours TodayFrequently Asked Questions
Clear answers to common questions about Stirring & Mixing products to help you choose and use the right solutions.
Shape choice depends on the vessel and the fluid’s viscosity — please refer to our stirbar selection guide HERE.
Spin-out happens when the drive magnet turns faster than the stir bar can follow — usually from too high a speed setting, a bar that is undersized for the vessel, or a viscous sample. Reduce the speed, let the bar re-couple, then ramp back up gradually.
Yes. Spinbar® stir bars are fully autoclavable and encapsulated in FDA Grade, USP Class VI Teflon® PTFE for superior chemical compatibility.
The Stirring & Mixing range covers magnetic stirbars, stirbar accessories, non-magnetic stirring tools, and mechanical mixers and stirrers — from single-sample benchtop work through to high-volume drum agitation.
Laboratory, research, and industrial users across pharma, life sciences, academic, food and beverage, and industrial manufacturing environments.