Mini Magnetic Stirrer
Compact single-position magnetic stirrer with brushless motor, 200-2000 rpm speed range, and programmable timing for routine laboratory mixing applications up to 3L volume.
Louise Corscadden, PhD
Neuroscience · ConductScience
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The Mini Magnetic Stirrer (BIO-0800) is a compact benchtop instrument designed for routine mixing applications in laboratory settings. This single-position stirrer employs a brushless DC motor to generate magnetic coupling with stirring bars up to 40mm in length, enabling efficient mixing of solutions up to 3L in volume. The unit features precise speed control from 200-2000 rpm with 10 rpm resolution, displayed on an integrated LED readout for consistent reproducibility across experiments.
The stirrer incorporates programmable timing functionality (0-99h59min or continuous operation) and a durable ABS+PC working surface (130mm diameter) suitable for standard laboratory glassware. With its compact footprint (140×46×162mm) and low power consumption (5W), this instrument provides reliable magnetic stirring for sample preparation, chemical synthesis, and analytical procedures where controlled mixing is required.
How It Works
The Mini Magnetic Stirrer operates on electromagnetic induction principles, where a rotating magnetic field generated by the brushless DC motor couples with a magnetic stirring bar placed in the sample container. The motor creates a time-varying magnetic field that penetrates the non-magnetic working surface, causing the stirring bar to rotate synchronously with the motor speed. This contactless energy transfer eliminates mechanical wear and contamination risks associated with direct drive systems.
The brushless DC motor provides precise rotational control through electronic commutation, eliminating brush friction and enabling consistent torque delivery across the 200-2000 rpm operating range. The magnetic coupling strength depends on the stirring bar size (maximum 40mm length), solution viscosity, and gap between the motor assembly and stirring bar. The LED display provides real-time speed feedback, while the integrated timer function allows for automated stirring protocols.
Features & Benefits
Automation Level
- manual
Disk Material
- ABS+PC
Working Surface Size
- ф130mm
Motor Type
- Brushless DC motor
Stirring Point
- 1
Maximum Mixing Volume
- 3L
Maximum Length of Stirrer
- 40mm
Speed Display
- LED display
Set Precision
- 10rpm
Range of Rotation
- 200~2000rpm
Timing Function
- 0~99h59min/continuous
Rated Power
- 5W
External Size
- 140*46*162mm
Brand
- ConductScience
Research Domain
- Analytical Chemistry
- Environmental Monitoring
- Food Science
- Materials Science
- Microbiology
- Pharmaceutical QC
Power/Voltage
- AC100~220V, 50/60Hz
Weight
- 0.3kg
Weight
- 0.3 kg
Dimensions
- L: 16.2 mm
- W: 14.0 mm
- H: 4.6 mm
| Feature | This Product | Typical Alternative | Advantage |
|---|---|---|---|
| Motor Type | Brushless DC motor | Entry-level models often use brushed motors requiring periodic maintenance | Eliminates brush replacement and provides consistent performance over extended operational life |
| Speed Range | 200-2000 rpm with 10 rpm precision | Basic stirrers may offer broader ranges but with lower precision control | Provides precise speed control optimized for typical laboratory mixing requirements |
| Timer Function | Programmable 0-99h59min or continuous operation | Many compact stirrers lack integrated timing capabilities | Enables automated stirring protocols without external timers or constant monitoring |
| Working Surface | 130mm ABS+PC chemical-resistant surface | Smaller units may have limited surface area or basic plastic construction | Accommodates standard laboratory glassware while providing chemical resistance for safety |
| Power Consumption | 5W rated power | Larger stirrers typically consume 10-50W depending on motor design | Reduces operational costs and heat generation for temperature-sensitive applications |
This stirrer combines brushless motor reliability with precision speed control and automated timing in a compact design. The 3L mixing capacity and chemical-resistant working surface make it suitable for routine laboratory applications requiring consistent, controlled mixing.
Practical Tips
Start stirring at low speeds (200-400 rpm) and gradually increase to prevent stirring bar decoupling or sample splashing.
Why: Prevents loss of magnetic coupling and ensures stable stirring establishment.
Clean the working surface with mild laboratory detergent and inspect for scratches that could harbor contamination.
Why: Maintains optimal magnetic field transmission and prevents cross-contamination between samples.
Verify displayed speed using an external tachometer periodically to ensure LED display accuracy.
Why: Confirms speed precision for applications requiring documented stirring parameters.
Ensure adequate clearance between stirring bar and container walls to prevent glass breakage from vigorous stirring.
Why: Prevents container damage and potential injury from broken glassware.
If stirring bar stops rotating, reduce speed temporarily to re-establish magnetic coupling before returning to desired speed.
Why: High viscosity or excessive speed can cause magnetic decoupling that resolves at lower speeds.
Document stirring speed and duration in experimental protocols to ensure reproducible mixing conditions.
Why: Mixing parameters directly affect reaction kinetics and analytical results.
Setup Guide
What’s in the Box
- Mini Magnetic Stirrer main unit
- Power cord with regional plug adapter (typical)
- User manual and quick start guide (typical)
- Magnetic stirring bar starter set (typical)
Warranty
ConductScience provides a standard one-year manufacturer warranty covering defects in materials and workmanship. Technical support is available to assist with setup, operation, and troubleshooting throughout the product lifecycle.
Compliance
References
Background reading relevant to this product:
What is the maximum torque available for stirring viscous solutions?
The brushless DC motor provides consistent torque across the 200-2000 rpm range, but specific torque values should be confirmed from the product datasheet. For highly viscous solutions, consult technical specifications for motor performance curves.
Can this stirrer handle organic solvents that might affect the working surface?
The ABS+PC working surface provides chemical resistance to most common laboratory solvents, but compatibility with specific organic solvents should be verified against the chemical compatibility chart in the product documentation.
How does stirring speed accuracy compare to mechanical stirrers?
The LED display shows actual speed with 10 rpm resolution, and the brushless DC motor eliminates speed variations common with brush-type motors. Specific accuracy specifications are available in the product datasheet.
What stirring bar sizes are recommended for optimal performance?
The system accommodates stirring bars up to 40mm in length. Bar selection depends on container geometry and solution volume, with longer bars generally providing better mixing for larger volumes within the 3L maximum capacity.
Can the timer function be used for repetitive stirring cycles?
The timer provides single-cycle operation from 0-99h59min or continuous mode. For repetitive cycles, the timer must be manually reset after each interval.
How does magnetic coupling strength vary with container material and thickness?
Magnetic field strength decreases with distance, so thinner non-magnetic containers (glass, plastic) provide stronger coupling. Metal containers will interfere with magnetic field transmission and should be avoided.
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