Magnetic Stirrer
Benchtop magnetic stirrer with 2L capacity, 0-2600 rpm stepless speed control, and 120-minute timer for reliable sample mixing in laboratory applications.
The ConductScience Magnetic Stirrer is a benchtop instrument designed for homogeneous mixing of liquid samples in laboratory environments. This DC brushed motor-driven unit accommodates volumes up to 2 liters with stepless speed regulation from 0 to 2600 rpm, providing precise control over mixing intensity. The 125mm diameter working plate enables efficient magnetic coupling with standard stir bars for consistent sample agitation.
The integrated timer function allows automated operation up to 120 minutes, supporting unattended mixing protocols. With 5W stirring power and universal power supply compatibility (100-240V, 50-60Hz), this magnetic stirrer delivers reliable performance across diverse laboratory settings. The compact design (240×180×110mm) and 1.7kg weight facilitate benchtop integration while maintaining operational stability.
How It Works
Magnetic stirring operates through electromagnetic induction principles, where a rotating magnetic field generated beneath the working plate couples with a magnetic stir bar placed in the sample container. The DC brushed motor creates this rotating field at precisely controlled speeds, causing the stir bar to rotate synchronously and create convective mixing patterns within the liquid.
The stepless speed regulation from 0 to 2600 rpm allows researchers to optimize mixing intensity based on sample viscosity, volume, and experimental requirements. Lower speeds (100-500 rpm) provide gentle mixing for sensitive samples or to prevent vortex formation, while higher speeds (1000-2600 rpm) ensure rapid homogenization of viscous solutions or large volumes up to the 2L capacity limit.
The integrated timer function enables automated operation by terminating stirring after a preset duration, preventing over-mixing and allowing for standardized protocols. The 5W motor provides sufficient torque to maintain consistent rotation even with viscous samples or when using larger magnetic stir bars.
Features & Benefits
Weight
- 1.7 kg
Dimensions
- L: 42.0 mm
- W: 43.6 mm
- H: 38.0 mm
Comparison Guide
| Feature | This Product | Typical Alternative | Advantage |
|---|---|---|---|
| Speed Range | 0-2600 rpm stepless regulation | Basic models often limited to 1500 rpm or fixed speed settings | Enables optimization for both gentle mixing of sensitive samples and rapid homogenization of viscous solutions |
| Maximum Volume | 2L capacity | Entry-level stirrers commonly handle 1L or less | Accommodates larger batch preparations and standard laboratory container sizes |
| Timer Function | 0-120 minute integrated timer | Manual operation only in basic models | Provides automated protocol control and prevents sample over-processing |
| Motor Power | 5W DC brushed motor | Lower power motors in compact units | Maintains consistent rotation with viscous samples and larger stir bars |
| Working Plate | 125mm diameter plate | Smaller plates limit container compatibility | Supports diverse container sizes with effective magnetic coupling across the surface |
| Power Supply | 100-240V universal compatibility | Region-specific power requirements | Simplifies international laboratory installations and equipment transfers |
This magnetic stirrer combines essential laboratory mixing capabilities with practical features including wide speed range, timer automation, and universal power compatibility. The 5W motor and 2L capacity support diverse sample preparation protocols while maintaining compact benchtop integration.
Practical Tips
Verify speed accuracy periodically using a tachometer or strobe light to ensure consistent mixing parameters across experiments.
Why: Speed drift can affect reproducibility in protocols requiring precise mixing conditions
Clean the working plate surface regularly with appropriate solvents to prevent chemical buildup that could affect magnetic coupling.
Why: Contamination on the plate reduces magnetic field transmission and stirring efficiency
Start mixing at low speeds and gradually increase to prevent stir bar decoupling or excessive vortex formation.
Why: Sudden high speeds can cause stir bar jumping or sample splashing, disrupting the mixing process
Select stir bar length approximately 2/3 of container diameter for optimal mixing efficiency without wall contact.
Why: Proper stir bar sizing ensures effective circulation patterns and prevents mechanical interference
If stir bar decouples frequently, reduce speed or check for magnetic interference from nearby equipment.
Why: Decoupling indicates insufficient magnetic coupling or competing magnetic fields
Position the unit away from magnetic storage media and sensitive electronic equipment to prevent interference.
Why: The magnetic field can damage data storage devices or affect nearby electronic instruments
Use consistent mixing speeds and times across replicate samples to ensure reproducible experimental conditions.
Why: Variation in mixing parameters introduces uncontrolled variables that can affect analytical results
Allow viscous samples to reach room temperature before high-speed mixing to reduce motor strain and improve efficiency.
Why: Cold viscous samples require more power to mix and may cause premature motor wear
Setup Guide
What’s in the Box
- Magnetic stirrer main unit
- Power cord
- User manual and operating instructions
- Warranty documentation (typical)
Warranty
ConductScience provides a standard one-year manufacturer warranty covering defects in materials and workmanship, with technical support available for operational guidance and troubleshooting assistance.
Compliance
References
Background reading relevant to this product:
What is the maximum torque capability with viscous samples?
The 5W DC brushed motor provides sufficient torque for most laboratory applications up to 2L volume, though specific torque values should be confirmed through the product datasheet for viscous sample requirements.
Can this stirrer handle heated applications?
This model provides magnetic stirring only without integrated heating. Consult product specifications for maximum ambient operating temperature and consider a hot plate stirrer combination for heated mixing applications.
What stir bar sizes are compatible with the 125mm working plate?
The 125mm plate accommodates standard magnetic stir bars from 10mm to 50mm length, with optimal coupling achieved when the stir bar length is approximately 2/3 of the container diameter.
How accurate is the speed control across the 0-2600 rpm range?
The stepless speed regulation provides continuous adjustment throughout the range, though specific accuracy specifications and speed stability tolerances should be verified in the technical documentation.
Can the unit operate continuously without the timer function?
Yes, the stirrer can operate continuously in manual mode or with the timer set to maximum 120-minute intervals, requiring manual restart for longer protocols.
What is the maximum container weight that can be safely supported?
The working plate can support standard laboratory glassware, though specific weight limits and recommended container types should be confirmed in the product specifications.
How does this compare to other benchtop magnetic stirrers?
This unit offers a competitive speed range up to 2600 rpm with 2L capacity and integrated timing, typical features for mid-range laboratory stirrers in this size class.
What maintenance is required for optimal performance?
Regular cleaning of the working plate and verification of speed calibration are recommended, with specific maintenance intervals and procedures detailed in the user manual.
Have a question about this product?
Upgrade Options
