Questions and Answers about laboratory Orbital shakers
1. What is the speed range (in RPM) and what is the orbital diameter (in mm)?
Most laboratory orbital shakers offer a speed range between 50 to 500 RPM, depending on the model. The orbital diameter typically varies from 10 mm to 25 mm, with common options being 20 mm or 25 mm to ensure effective mixing without damaging sensitive samples.
2. What is the maximum load capacity, including the weight of the platform and vessels?
The maximum load capacity can range from 2 kg to over 20 kg, including the weight of the platform and vessels. Higher-end models support greater weights and are suitable for larger flasks and high-volume processing.
3. Does the shaker have a continuous run mode and a timed mode? If so, what is the maximum duration for the timer?
Yes, most orbital shakers feature both continuous operation and timed mode. The timer typically allows settings from 1 minute up to 99 hours, depending on the model. Some offer infinite run capability for long experiments.
4. What are the dimensions of the shaker's platform and what types of vessel clamps are available (e.g., for flasks, beakers, microplates)?
Platform sizes vary widely, typically ranging from 200 x 200 mm to 500 x 500 mm. Available clamps include holders for:
- Erlenmeyer flasks (50 mL to 2000 mL),
- Beakers,
- Test tube racks,
- Microplates (single or multiple).
Custom platform configurations are often supported.
5. What is the motor type and is it designed for continuous duty?
Most orbital shakers use brushless DC motors or induction motors, both known for low maintenance and continuous-duty design, ensuring stable operation over long periods with minimal heat buildup.
Control and Safety
6. Does the shaker have a digital display for speed and time, and is it programmable?
Yes, advanced models feature a digital LCD or LED display for real-time speed and time monitoring. Many units are programmable with memory functions to store and recall protocols for repetitive use.
7. Are there safety features such as an automatic imbalance detection or a splash-proof design?
Yes, premium Laboratory shakers often include:
- Imbalance detection to prevent damage or spillage,
- Overload protection,
- Splash-proof enclosures (often IP21 or higher) for safe use in wet lab conditions.
8. Can the speed be ramped up slowly to prevent spillage?
Yes, most digital orbital shakers have a gentle start (soft start) feature that gradually increases the speed to prevent liquid splashing or container tipping.
9. What is the recommended operating temperature and humidity range?
Typical operating conditions:
- Temperature: 5°C to 40°C
- Humidity: Up to 80% non-condensing
Always check the model’s user manual for specific environmental tolerances.
Special Features and Accessories
10. Is it a standalone orbital shaker, or does it include incubation or refrigeration capabilities?
Orbital shakers are available in two types:
- Standalone models for ambient shaking,
- Incubated or refrigerated shakers for temperature-controlled applications, ideal for cell cultures or protein expression studies.
11. Is there an RS232 or other interface for data logging or remote control?
Many modern models include RS232, USB, or Ethernet ports for:
- Remote control,
- Data logging,
- Integration with LIMS or external monitoring systems.
12. What is the available platform for this model? Is it sold separately?
Most shakers come with a standard universal platform. However, specialty platforms (e.g., for microplates, flask clamps, or sticky mats) may be sold separately. Compatibility varies by manufacturer.
13. What are the maintenance requirements, and are spare parts like belts or filters readily available?
Maintenance is typically minimal:
- Regular cleaning of the platform,
- Periodic checks for wear on belts (if applicable),
- Lubrication-free motors in most models.
Reputable manufacturers offer easy access to spare parts such as:
- Drive belts,
- Fuse replacements,
- Platform accessories,
- Rubber feet or dampers.
