Laboratory Stir Bars
Magnetic stir bars are designed for efficient mixing of liquids when used with magnetic stirrers.
Coated for chemical resistance, they ensure smooth and consistent agitation.
Australian laboratories depend on reliable stir bars for precise and uniform solution mixing.
Flexible Magnetic Stir Bar Retriever for Stir Bar Removal
- Flexible magnetic retriever for removing spin bars
- Designed for retrieving magnetic stirring bars from laboratory vessels
- Magnetic tip helps attract compatible stir bars
- Flexible construction supports access into suitable glassware and containers
- Length listed as 40 cm
- Useful for school, university and teaching laboratory use
- Practical accessory for magnetic stirring workflows
- Helps reduce direct hand contact with stir bars and vessel contents
- Confirm vessel size, stir bar type and chemical compatibility before use
- Stir bar retriever only, stir bars and glassware are not included
- Clean after use according to laboratory procedure
- Use under appropriate laboratory or educational supervision
AUD 24.90 (Ex GST)
PTFE Cross Stir Bar 38 x 38 mm, Stable General Purpose Stirring
- PTFE cross stir bar for general purpose magnetic stirring applications
- 38 × 38 mm size supports use with compatible laboratory vessels
- Cross profile provides extra stability during stirring operation
- Designed to help reduce jumping, chatter and loss of magnetic coupling
- Suitable where standard cylindrical stir bars may be less stable
- PTFE construction supports chemical resistance and simple cleaning
- For laboratory or educational use only under appropriate supervision
AUD 13.90 (Ex GST)
PTFE Octahedral Stir Bar 5.5 x 42 mm, Turbulence at Low Speed
- PTFE octahedral magnetic stir bar for general laboratory stirring
- 5.5 × 42 mm size supports use with compatible laboratory vessels
- Octahedral profile is described as similar to a pivot ring stir bar
- Designed to create more turbulence at low stirring speeds
- Useful where mixing is required without higher speed operation
- PTFE construction supports chemical resistance and easy cleaning
- For laboratory or educational use only under appropriate supervision
AUD 13.90 (Ex GST)
PTFE Oval Stir Bars, For Round Bottom Flasks, L10 to L40 Sizes
- PTFE oval magnetic stir bars for round bottom flasks and boiling flasks
- Oval profile suits curved flask bases during magnetic stirring
- Designed to support stable rotation and reduce chatter during operation
- PTFE construction supports chemical resistance and easy cleaning
- Available in L10, L20, L25, L30 and L40 size options
- Suitable for routine laboratory stirring and educational demonstrations
- Use under appropriate supervision with compatible flasks and stirrers
From AUD 4.50 (Ex GST)
This product has multiple variants. The options may be chosen on the product page
PTFE Pivot Stir Bars, For Curved Base Vessels, B10 to B40 Sizes
• PTFE pivot type magnetic stir bars designed for vessels with slightly curved or uneven base surfaces
• Pivot action helps bar self align to the optimum stirring position, supports stable rotation and mixing
• Suitable for routine laboratory stirring where standard straight bars may chatter or lose coupling on curved bottoms
• Size options: B10 5 x 10, B20 8 x 20, B25 8 x 25, B30 8 x 30, B40 8 x 40
• Used in laboratory or educational settings only, operate under supervision and match bar size to vessel volume and stirrer strength
From AUD 3.90 (Ex GST)
This product has multiple variants. The options may be chosen on the product page
PTFE Smooth Stir Bars, General Purpose, Z10 to Z50 Sizes
- PTFE smooth stir bars for general purpose magnetic stirring applications
- Smooth cylindrical profile supports stable mixing in compatible vessels
- Suitable for routine solution preparation, reagent blending and bench stirring
- Designed to reduce chatter and support consistent magnetic coupling
- PTFE construction supports chemical resistance and easy cleaning
- Available in Z10, Z15, Z20, Z25, Z30, Z40 and Z50 sizes
- For laboratory or educational use only under appropriate supervision
From AUD 2.50 (Ex GST)
This product has multiple variants. The options may be chosen on the product page
didn't see what you are looking for ?
We’ll source it or make it for you. LabChoice supports your research every step.
Laboratory Stir Bars are magnetic mixing accessories used with magnetic stirrers for routine liquid mixing, solution preparation, reagent blending, and general laboratory agitation. This category includes PTFE smooth stir bars, PTFE oval stir bars, PTFE pivot stir bars, PTFE cross stir bars, PTFE octahedral stir bars, and flexible magnetic stir bar retrievers for easy spin bar removal.
PTFE smooth stir bars are a practical general-purpose option for everyday stirring in beakers, flasks, bottles, and compatible laboratory vessels. Oval stir bars are useful for round bottom flasks, while pivot stir bars are suited to curved base vessels where a standard straight bar may not sit correctly. Cross and octahedral designs help improve mixing movement in specific vessel shapes or lower-speed stirring conditions, depending on the application.
The flexible magnetic stir bar retriever helps remove stir bars from vessels without tipping or manually reaching into the container. This is useful after mixing, especially when working with narrow-neck vessels, deeper glassware, or solutions where cleaner handling is preferred. Users should select stir bars based on vessel shape, liquid volume, viscosity, stirrer strength, speed setting, and chemical compatibility.
PTFE coating is widely used on laboratory stir bars because it provides a smooth, chemically resistant surface for many routine laboratory liquids. Users should still confirm chemical and temperature compatibility before use, especially with aggressive chemicals, high-temperature applications, abrasive suspensions, or specialised solvents. Stir bars should be cleaned after use, inspected for coating damage, and replaced if the surface becomes cracked, worn, or contaminated.
For material reference, ASTM D4894 covers granular PTFE resin specification and test methods, ASTM D543 covers evaluation of plastic resistance to chemical reagents, and ISO 13000-1 provides designation and specification context for processed unfilled PTFE products. These references support the PTFE material and chemical-resistance context only, and should not be used as product-specific compliance claims unless supported by manufacturer documentation.
For LabChoice Australia customers, Laboratory Stir Bars provide a practical accessory range for Australian laboratories, schools, universities, research facilities, and preparation rooms needing reliable magnetic stirring accessories, vessel-specific stir bar shapes, and convenient stir bar retrieval tools for everyday liquid mixing workflows.