The StemAids Rotary Mixer SB2/SB3 – STUART is a laboratory tube rotator designed for gentle, uniform, and controlled end-over-end mixing of biological samples, blood collection tubes, suspensions, reagents, cultures, and laboratory solutions. It is suitable for educational laboratories, clinical laboratories, biotechnology labs, pharmaceutical labs, research facilities, and quality-control laboratories.
Product Description
The Rotary Mixer SB2/SB3 – STUART supplied by StemAids is designed for effective rotary mixing of tubes and sample containers. Its adjustable rotating angle allows users to select gentle rolling action or full end-over-end mixing depending on the application requirement.
The SB2 model offers simple fixed-speed operation, while the SB3 model provides variable speed control and timer-based operation for repeatable laboratory procedures. This makes the rotary mixer suitable for keeping blood samples in suspension, aerating cultures, mixing reagents, preparing biological samples, and performing routine laboratory protocols.
Key Features
- Gentle and effective end-over-end rotary mixing action.
- Suitable for blood samples, biological samples, cultures, suspensions, and reagents.
- Fully adjustable mixing angle from horizontal to vertical position.
- SB2 model with fixed speed operation for simple laboratory mixing.
- SB3 model with variable speed control and digital timer for repeatable procedures.
- Compatible with multiple tube holders for different tube sizes.
- Stable benchtop design with compact laboratory footprint.
- Integrated spillage tray helps protect the laboratory bench area.
- Can be used in cold rooms and incubator environments within recommended limits.
- Suitable for school, college, research, clinical, and pharmaceutical laboratories.
Product Specifications
| Product Name | Rotary Mixer SB2/SB3 – STUART |
|---|---|
| Brand | StemAids |
| Reference Model | STUART SB2 / STUART SB3 Tube Rotator |
| Instrument Type | Laboratory rotary mixer / tube rotator |
| Mixing Motion | End-over-end rotary mixing |
| Mixing Angle | Fully adjustable from horizontal to vertical position |
| SB2 Speed Range | Fixed speed at 20 rpm |
| SB2 Speed Control | Not applicable, fixed-speed model |
| SB2 Timer | Not available |
| SB3 Speed Range | 2-40 rpm |
| SB3 Speed Control | Digital speed control |
| SB3 Timer | Digital timer, model-dependent timer range |
| Tube Holder Compatibility | Compatible with optional tube holders for microcentrifuge tubes, test tubes, blood tubes, centrifuge tubes, and culture tubes |
| Typical Tube Holder Options | 1.5 mL microcentrifuge tubes, 9-20 mm test/blood tubes, 50 mL centrifuge tubes, 12 mm culture tubes, 16 mm culture tubes, and 26 mm culture tubes with suitable accessories |
| Dual Holder Compatibility | Dual holder accessory available for selected configurations |
| Operating Environment | Cold room down to 4°C and incubator use up to 60°C, subject to recommended operating conditions |
| Dimension | Approx. 200 × 270 × 230 mm |
| Net Weight | Approx. 3.2 kg |
| Electrical Supply | 230 V, 50 Hz |
| Power Consumption | Approx. 50 W |
| Spillage Tray | Included |
| Application Area | Life science labs, clinical labs, biotechnology labs, pharmaceutical labs, research labs, and educational laboratories |
Applications
- Keeping blood samples in suspension.
- Gentle mixing of biological samples and cell suspensions.
- Aeration of cultures and laboratory sample tubes.
- Mixing of reagents, buffers, and laboratory solutions.
- Preparation of clinical diagnostic samples.
- Routine life science and biotechnology laboratory work.
- Educational demonstrations in biology, chemistry, and medical laboratory training.
- General tube mixing in research and quality-control laboratories.
How to Use the Rotary Mixer SB2/SB3
- Place the rotary mixer on a clean, dry, flat, and stable laboratory bench.
- Connect the unit to the recommended power supply.
- Select the correct tube holder according to tube size and sample requirement.
- Install the tube holder securely on the rotator spindle.
- Load tubes evenly to maintain proper balance during rotation.
- Ensure all tube caps are tightly closed before operation.
- Adjust the mixing angle using the side adjustment mechanism.
- For SB2, switch on the unit for fixed-speed rotary mixing.
- For SB3, set the required speed and timer using the digital controls.
- Start the mixer and observe the first few rotations to confirm stable operation.
- After completion, stop the unit before removing tubes.
- Clean the spillage tray, tube holder, and external surface after use.
Safety and Handling Guidelines
- Do not exceed the recommended capacity of the selected tube holder.
- Always balance tubes evenly before starting the rotary mixer.
- Use only properly capped tubes to prevent leakage during rotation.
- Do not touch or adjust the rotating tube holder while the unit is running.
- Use compatible tube holders and accessories only.
- Keep the equipment away from direct water splashes and corrosive vapours.
- Wear laboratory gloves, safety goggles, and a lab coat while handling samples.
- Disconnect the power supply before cleaning or changing accessories.
- Use the instrument under trained laboratory supervision.
Why Choose StemAids Rotary Mixer SB2/SB3 – STUART?
StemAids supplies laboratory instruments for educational institutions, research laboratories, diagnostic facilities, and institutional procurement projects. The Rotary Mixer SB2/SB3 – STUART is suitable for laboratories that require gentle tube rotation, repeatable sample mixing, and reliable end-over-end agitation.
- Suitable for life science, clinical, biotechnology, and pharmaceutical laboratories.
- SB2 fixed-speed option supports simple routine mixing.
- SB3 variable-speed option supports controlled and repeatable laboratory protocols.
- Adjustable angle supports gentle rolling or full end-over-end mixing.
- Compact design is suitable for routine benchtop laboratory use.
- Procurement-friendly product details for catalogues, quotations, and institutional tenders.
Technical Note
The SB2 model is suitable for users who require simple fixed-speed tube rotation, while the SB3 model is recommended when variable speed, digital timing, and repeatable protocols are required. Tube holders should be selected according to tube volume, diameter, sample type, and required mixing intensity.
Frequently Asked Questions
1. What is the Rotary Mixer SB2/SB3 used for?
It is used for gentle rotary mixing of tubes, blood samples, biological samples, cultures, suspensions, reagents, and laboratory solutions.
2. What is the difference between SB2 and SB3?
The SB2 is a fixed-speed model operating at 20 rpm. The SB3 is a variable-speed model with 2-40 rpm speed range and digital timer control.
3. Can the mixing angle be adjusted?
Yes. The mixing angle can be adjusted from horizontal position for minimal mixing to vertical position for full end-over-end mixing.
4. Is this mixer suitable for blood samples?
Yes. The rotary mixer is suitable for keeping blood samples and biological suspensions uniformly mixed under appropriate laboratory conditions.
5. Can it be used in a cold room or incubator?
Yes. The reference Stuart rotator can be used in cold rooms down to 4°C and in incubators up to 60°C, subject to laboratory safety and operating guidelines.
6. Which tube holders can be used?
Optional tube holders are available for microcentrifuge tubes, blood tubes, test tubes, centrifuge tubes, and culture tubes. The correct holder should be selected according to tube size and application.
7. Does the SB3 model have a timer?
Yes. The SB3 model includes a digital timer for controlled and repeatable mixing procedures.
8. Is it suitable for school and college laboratories?
Yes. It is suitable for biology laboratories, chemistry laboratories, medical training labs, STEM labs, college practical work, and university research applications.
9. How should the rotary mixer be cleaned?
Switch off and disconnect the instrument before cleaning. Wipe the tube holder, spillage tray, and exterior surface with a soft damp cloth and mild detergent. Do not immerse the unit in water.
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