Magnetic Stirrer MS Series
Laboratory magnetic stirrer with brushless DC motor, 0-1500 rpm speed range, and 20L mixing capacity for consistent solution preparation and chemical reactions.
| Automation Level | manual |
| MS-PA | MS-PB |
| Work Plate Size | Ø135mm(5 inch) |
| Item No. | 8030211000 |
| 8030284200 | 8030294000 |
| Work Plate Material | Stainless steel with ceramic coated |
The Magnetic Stirrer MS Series is a laboratory-grade stirring platform designed for consistent mixing of solutions in research and analytical applications. Built around a brushless DC motor delivering 10W output power, the unit provides precise speed control from 0 to 1500 rpm through a manual scale interface. The 135mm (5-inch) diameter stainless steel work plate features ceramic coating for chemical resistance and easy cleaning.
This benchtop instrument accommodates stirring volumes up to 20 liters with magnetic stirrer bars up to 80mm in length. The scale-based speed display and LED indicators provide visual feedback during operation. Operating specifications include a working environment range of 5-40°C at 80% relative humidity, making it suitable for standard laboratory conditions across multiple research disciplines.
How It Works
The magnetic stirrer operates on electromagnetic induction principles, where a rotating magnetic field generated beneath the work plate drives a magnetic stirrer bar placed within the solution. The brushless DC motor rotates a series of permanent magnets, creating a time-varying magnetic field that penetrates through the ceramic-coated stainless steel work plate. This field couples with the magnetic stirrer bar, causing it to rotate synchronously with the motor.
The 18W motor input provides 10W of useful mechanical output through efficient power conversion, enabling consistent torque delivery across the 0-1500 rpm speed range. The ceramic coating on the stainless steel work plate provides chemical inertness while maintaining magnetic field transmission. Speed control is achieved through motor drive electronics that adjust the rotation frequency based on the manual scale setting, with LED indicators providing visual confirmation of operation status.
Features & Benefits
Automation Level
- manual
MS-PA
- MS-PB
Work Plate Size
- Ø135mm(5 inch)
Item No.
- 8030211000
8030284200
- 8030294000
Work Plate Material
- Stainless steel with ceramic coated
Max. Stirring Capacity
- 20L
Motor Type
- Brushless DC motor
Motor Input
- 18W
Motor Output
- 10W
Speed Range
- 0~1500rpm
Speed Display
- Scale
LED
- Scale
Max. Stirrer Bar Length
- 80mm
Working Environment
- 5~40°C, 80%RH
Brand
- ConductScience
Research Domain
- Analytical Chemistry
- Cell Biology
- Environmental Monitoring
- Food Science
- Materials Science
- Microbiology
- Pharmaceutical QC
Weight
- 3.0 kg
Dimensions
- L: 8.5 mm
- W: 16.0 mm
- H: 28.0 mm
Comparison Guide
| Feature | This Product | Typical Alternative | Advantage |
|---|---|---|---|
| Motor Type | Brushless DC motor with 10W output | Entry-level models often use brush motors with shorter lifespans | Eliminates electrical noise and maintenance requirements while providing consistent torque delivery |
| Speed Range | 0-1500 rpm with scale control | Basic units typically offer 0-1000 rpm or fixed speeds | Extended speed range accommodates both gentle mixing and vigorous homogenization requirements |
| Stirring Capacity | 20L maximum volume | Standard models often limited to 5-10L capacity | Supports larger batch preparations and high-throughput laboratory workflows |
| Work Plate Coating | Ceramic-coated stainless steel | Many units feature painted surfaces or uncoated plates | Provides superior chemical resistance and easier decontamination procedures |
| Stirrer Bar Length | 80mm maximum length supported | Compact units may limit stirrer bars to 50-60mm | Accommodates larger vessels and more effective mixing patterns in high-volume applications |
The MS Series combines brushless motor reliability with extended stirring capacity and chemical-resistant surfaces. The 1500 rpm maximum speed and 20L capacity provide versatility for both routine sample preparation and larger batch processing requirements.
Practical Tips
Start stirring at low speed and gradually increase to prevent stirrer bar decoupling or solution splashing.
Why: Sudden speed changes can cause the magnetic stirrer bar to stop following the rotating field or create unwanted turbulence.
Clean the ceramic work plate surface regularly with appropriate solvents and inspect for scratches or damage.
Why: Surface contamination can affect magnetic coupling efficiency and scratches may harbor chemical residues.
Verify actual rotation speed with a tachometer if precise rpm values are critical for your protocol.
Why: The scale interface provides relative speed control but may not correspond to exact rpm values across all operating conditions.
Ensure stirrer bars are completely submerged and cannot contact vessel walls during operation.
Why: Contact with glass can cause chipping or scratching, while partially submerged bars may become projectiles if decoupled.
If stirrer bar stops following at higher speeds, reduce speed and check for proper centering on the work plate.
Why: Off-center positioning or excessive speed can overcome the magnetic coupling force, causing the stirrer bar to stop rotating.
Allow sufficient mixing time at consistent speed to ensure complete homogenization before sampling.
Why: Inadequate mixing time can lead to concentration gradients that affect analytical reproducibility.
Match stirrer bar size to vessel geometry - use longer bars for wide vessels and shorter bars for narrow containers.
Why: Proper sizing ensures effective mixing patterns while maintaining stable magnetic coupling throughout the solution volume.
Setup Guide
What’s in the Box
- Magnetic Stirrer MS Series main unit
- Power cord (typical)
- User manual and operating instructions (typical)
- Product warranty documentation (typical)
Warranty
ConductScience provides standard 1-year manufacturer warranty covering defects in materials and workmanship. Technical support is available for operational questions and troubleshooting assistance.
Compliance
References
Background reading relevant to this product:
What is the maximum viscosity of solutions this stirrer can effectively mix?
The 10W motor output provides adequate torque for most laboratory solutions. Viscosity limits depend on volume and stirrer bar size - consult product datasheet for specific viscosity parameters.
Can the unit operate continuously for extended periods?
Yes, the brushless DC motor design enables continuous operation within the 5-40°C temperature range. Ensure adequate ventilation around the unit during extended use.
What stirrer bar materials are compatible with the magnetic coupling?
Standard PTFE-coated magnetic stirrer bars work optimally. Maximum effective length is 80mm - longer bars may experience coupling instability at higher speeds.
How precise is the speed control across the 0-1500 rpm range?
Speed control uses a manual scale interface. For applications requiring precise rpm measurements, external tachometer verification is recommended.
Is the ceramic coating resistant to strong acids and bases?
The ceramic coating provides chemical resistance against most laboratory reagents. For highly concentrated acids or specific chemical compatibility, consult the chemical resistance chart in the product datasheet.
Can multiple units be operated simultaneously without magnetic interference?
Units should be spaced appropriately to prevent magnetic field interaction. Minimum spacing recommendations are provided in the installation guidelines.
What maintenance is required for optimal performance?
Regular cleaning of the work plate and periodic inspection of the stirrer bars. The brushless motor requires no routine maintenance beyond keeping ventilation areas clear.
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