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The Thermo Scientific Komet magnetic stirring bars are designed for laboratory applications that require powerful stirring performance. Firstly, these stirring bars contain a high-energy Samarium-Cobalt (SmCo) magnetic core. Secondly, they deliver up to three times more torque than conventional stirring bars. In addition, the evenly applied PTFE coating ensures excellent chemical resistance and prevents residue deposits.
Firstly, the Komet stirring bars are suitable for applications at high speeds and with viscous fluids. Secondly, they maintain their stirring performance even under demanding conditions, thanks to the SmCo core which is significantly stronger than standard ferrite magnets. In addition, the round shape with flattened ends allows stable rotation in both small cuvettes and large beakers.
Firstly, the Komet stirring bars are offered in five size options from Ø9 mm to Ø25 mm. Secondly, the standard variants Komet 15, 30, 50 and 90 cover applications from microvolumes to several litres. Moreover, the Komet Glide-Ring 30 features a wear-resistant glass ring, making it ideal for prolonged and intensive use in production environments.
Firstly, all Komet stirring bars are steam sterilisable up to 121°C, making them suitable for biotechnological and pharmaceutical applications. Secondly, the PTFE coating offers chemical resistance against acids, bases and organic solvents. In addition, these stirring bars meet the requirements for applications in pharma and biotech, medical diagnostics and food industry.
Need advice on the right stirring bar size for your application? Please contact our product specialists.
| Specification | Value |
|---|---|
| Magnetic core | Samarium-Cobalt (SmCo), high-energy |
| Coating | PTFE, evenly applied |
| Shape | Round with flattened ends |
| Available sizes | Ø9 × 15 mm, Ø13 × 30 mm, Ø17 × 30 mm (Glide-Ring), Ø21 × 50 mm, Ø25 × 90 mm |
| Glide-Ring version | Available in size 30 (Ø17 × 30 mm) with wear-resistant glass ring |
| Stirring torque | Up to 3× higher than conventional PTFE stirring bars |
| Maximum sterilisation temperature | 121°C (steam sterilisation) |
| Chemical resistance | Resistant to acids, bases and organic solvents |
| Packaging | 1 piece per pack |
| Applications | Microvolumes (cuvettes) to large vessels, viscous media, high stirring speeds |
| Compatibility | Suitable for all Thermo Scientific Cimarec and Variomag magnetic stirrers |
| Brand | Thermo Scientific |
Firstly, the Thermo Scientific Komet magnetic stirring bars deliver up to three times more stirring torque than conventional PTFE stirring bars, thanks to their high-energy Samarium-Cobalt (SmCo) magnetic core. Secondly, they are available in five sizes from Ø9 × 15 mm to Ø25 × 90 mm, suitable for microvolumes in cuvettes to large vessels of several litres. Moreover, the Glide-Ring version features a wear-resistant glass ring for intensive use in production environments.
Firstly, Komet stirring bars contain a Samarium-Cobalt (SmCo) magnetic core instead of standard ferrite. Secondly, this SmCo core delivers significantly more magnetic flux, resulting in stirring torque up to three times higher than conventional PTFE stirring bars. Moreover, the magnetic strength remains stable at higher temperatures.
Firstly, the Komet 15 (Ø9 × 15 mm) is suitable for microvolumes from 0.1 ml in cuvettes and small test tubes. Secondly, the Komet 30 (Ø13 × 30 mm) and Komet Glide-Ring 30 (Ø17 × 30 mm) work well in 50 to 250 ml beakers. In addition, the Komet 50 (Ø21 × 50 mm) is ideal for 500 ml to 1 litre, and the Komet 90 (Ø25 × 90 mm) for volumes from 1 to 5 litres or more.
Firstly, the Glide-Ring version features an additional glass ring around the stirring bar. Secondly, this ring reduces friction with the bottom of the vessel during prolonged stirring. Moreover, the Glide-Ring variant lasts considerably longer in intensive and continuous use in production environments or at high stirring speeds.
Firstly, all Komet stirring bars are fully steam sterilisable up to 121°C in an autoclave. Secondly, this makes them suitable for sterile applications in biotechnology, pharma and cell culture. In addition, repeated sterilisation does not affect the PTFE coating or the SmCo core.
Firstly, the PTFE coating is resistant to virtually all common laboratory chemicals, including strong acids, bases and organic solvents. Secondly, molten sodium and fluorinated compounds at high temperatures are exceptions that may affect the coating. Moreover, we advise getting in touch for specific advice on aggressive media choices.
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