Rotating Mixer BK-RD20 MX-RD-E MX-RD-Pro
Benchtop rotating mixers with variable speed (10-100 rpm) and adjustable inclination (0-90°) for gentle sample agitation in laboratory applications.
Louise Corscadden, PhD
Neuroscience · ConductScience
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The Rotating Mixer BK-RD20 series provides controlled rotational mixing for laboratory samples requiring gentle, continuous agitation. Available in three configurations (BK-RD20, MX-RD-E, and MX-RD-Pro), these benchtop mixers feature variable speed control from 10-100 rpm and adjustable inclination angles from 0° to 90°. The brushless DC motor ensures consistent, vibration-free operation for extended protocols.
These mixers accommodate various sample containers and provide either continuous operation or programmable timing modes up to 9999 minutes. The LED or LCD display systems enable precise parameter monitoring during operation. The compact footprint (33.2 × 25.0 × 28.0 cm) makes these mixers suitable for standard laboratory benchtops while maintaining stable operation across ambient temperatures from 5-40°C.
How It Works
The rotating mixer operates on the principle of orbital rotation combined with adjustable inclination to provide three-dimensional sample mixing. The brushless DC motor drives a platform that holds sample containers, creating a gentle rocking and rotating motion that ensures thorough mixing without the high shear forces associated with vortex mixing.
The variable inclination angle (0-90°) allows researchers to adjust mixing intensity based on sample viscosity and container geometry. At shallow angles, the motion provides gentle rolling action suitable for delicate samples, while steeper angles increase mixing efficiency for more viscous solutions. The precise speed control (10-100 rpm) enables optimization of mixing parameters for specific protocols.
The timing function allows for automated mixing protocols, eliminating the need for constant monitoring during extended incubations. The brushless motor design ensures consistent speed regulation and minimal heat generation, maintaining sample temperature stability during operation.
Features & Benefits
Automation Level
- semi-automated
MX-RD-E
- MX-RD-Pro
Item No.
- /
8031412000
- 8031412100
Speed Range
- 10~100rpm
0~80rpm
- 10~70rpm
Inclining Angle Range
- 0°~90°
/
- 1~1199min
Timing Range
- 1~9999min
Operation Mode
- Continuous or Timing
Continuous
- Continuous or Timing
Scale
- LCD
Motor Type
- Brushless DC motor
Ambient Temp.
- 5~40°C
Brand
- ConductScience
Research Domain
- Analytical Chemistry
- Cell Biology
- Food Science
- Materials Science
- Microbiology
- Pharmaceutical QC
Display Type
- LED
Weight
- 7.0 kg
Dimensions
- L: 33.2 mm
- W: 25.0 mm
- H: 28.0 mm
| Feature | This Product | Typical Alternative | Advantage |
|---|---|---|---|
| Speed Range | 10-100 rpm with precise digital control | Many entry-level mixers offer limited speed ranges or less precise control | Enables optimization for diverse sample types from delicate cell cultures to viscous solutions. |
| Inclination Adjustment | 0° to 90° variable inclination | Fixed-angle mixers typically offer single inclination settings | Allows researchers to customize mixing intensity and pattern for specific protocols. |
| Timing Capability | Programmable timing up to 9999 minutes | Basic models often lack extended timing functions | Supports long-term mixing protocols without constant monitoring. |
| Motor Type | Brushless DC motor | Some models use brushed motors with higher maintenance requirements | Provides consistent operation with minimal noise and reduced maintenance needs. |
| Display System | LED or LCD parameter display | Entry-level units may have basic indicator lights only | Enables precise monitoring and documentation of mixing parameters. |
| Operating Modes | Continuous and programmable timing modes | Basic mixers often provide only manual on/off operation | Accommodates both short-term manual mixing and automated extended protocols. |
The BK-RD20 series combines precise speed control, variable inclination, and extended timing capabilities in a compact design. The brushless motor and digital display systems provide reliable operation with clear parameter monitoring for diverse laboratory mixing applications.
Practical Tips
Verify speed accuracy periodically using a non-contact tachometer, especially after extended use or environmental changes.
Why: Ensures consistent mixing parameters for reproducible experimental results.
Clean the platform with mild detergent after each use and inspect motor coupling for any loose connections monthly.
Why: Prevents sample contamination and maintains mechanical stability.
Balance sample containers on opposite sides of the platform to minimize vibration during operation.
Why: Reduces noise and ensures smooth mixing action while extending motor life.
Start with lower inclination angles and speeds when working with new sample types to assess optimal mixing parameters.
Why: Prevents sample damage or spillage while determining ideal conditions.
Ensure all containers are properly secured before starting operation and never exceed the platform weight capacity.
Why: Prevents container displacement and maintains safe operation.
Document inclination angle and speed settings in laboratory notebooks for protocol reproducibility.
Why: Enables consistent results across experiments and facilitates method validation.
If mixing appears uneven, check platform level and verify that containers are not interfering with the motion range.
Why: Ensures optimal mixing efficiency and prevents mechanical stress on the drive system.
Allow the unit to reach room temperature before operation if stored in different environmental conditions.
Why: Prevents condensation and ensures stable motor performance.
Setup Guide
What’s in the Box
- Rotating mixer main unit
- Power adapter
- User manual
- Platform attachments (typical)
- Quick start guide (typical)
Warranty
ConductScience provides a standard one-year manufacturer warranty covering defects in materials and workmanship, with technical support available for setup and operational guidance.
Compliance
What container types and sizes can be accommodated on the mixing platform?
The platform design accommodates various container types including tubes, bottles, and flasks. Consult product datasheet for specific size limitations and recommended loading configurations.
How does the inclination angle affect mixing efficiency for different sample viscosities?
Lower angles (0-30°) provide gentle rolling motion suitable for cell suspensions and delicate samples, while higher angles (45-90°) increase mixing intensity for viscous solutions and extraction protocols.
Can the mixer operate continuously for extended periods without overheating?
The brushless DC motor design minimizes heat generation and supports extended continuous operation within the 5-40°C ambient temperature range.
What is the precision of speed control across the 10-100 rpm range?
The digital control system provides precise speed regulation. Consult product datasheet for specific speed accuracy specifications and calibration procedures.
How does this compare to traditional vortex mixers for sensitive samples?
The rotating action provides gentler, more uniform mixing compared to vortex mixers, making it suitable for shear-sensitive samples and applications requiring controlled agitation.
What maintenance procedures are required for optimal performance?
Regular cleaning of the platform and periodic inspection of the motor assembly are recommended. Consult user manual for detailed maintenance schedules and procedures.
Can multiple units be synchronized for parallel sample processing?
Each unit operates independently. For synchronized operation, consult technical support for potential timing coordination methods.
What data logging or connectivity options are available?
Consult product datasheet for specific data output and connectivity capabilities, which may vary by model configuration.
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