Heidolph Overhead Shaker Hei-Shake Base Salto Core

Heidolph overhead shaker Hei-Shake base Salto Core

This overhead shaker combines a robust design with high flexibility and is ideal for laboratories where samples with a high solids content need to be thoroughly mixed. Thanks to the wide speed range and high maximum permissible load, this model is particularly versatile and enables reliable mixing of a wide variety of solutions. Compared to similar devices on the market, it impresses with its integrated safety functions, electronic speed control and extensive range of accessories for different container sizes.

Properties and mode of operation

The device is specially designed to reliably mix liquids, solids and emulsions by continuously moving the samples overhead. This rotating shaking motion is advantageous for numerous applications, as it prevents unwanted foaming or turbulence effects that could affect sensitive substances, for example. The drive via a geared stepper motor ensures a constant speed and very smooth running. In addition, the wide range from 1 to 32 rpm allows precise adjustment to the respective mixing task, so that sedimenting samples, for example, remain in continuous motion and ingredients are evenly distributed.

The user-friendly timer function, which ranges from one minute to 999 hours and 59 minutes, is particularly useful. This long time span is particularly important for experiments with extended mixing intervals, such as in cell culture and microbiology, where constant stirring over hours or even days may be necessary. The integrated RS232 interface also simplifies documentation and remote control using corresponding software or process control systems.

To ensure safety, the device has an emergency stop switch that stops the movement immediately in an emergency. The design also complies with the DIN 19529 standard, which is particularly important for users in industry and research who rely on reproducible and verifiable work processes. The IP21 degree of protection ensures a certain level of basic protection against dripping water and foreign bodies, meaning that the system can be operated in typical laboratory environments without major restrictions.

Important technical features at a glance

- Speed range: 1 to 32 rpm with clockwise/anticlockwise rotation
- Maximum permissible load: 30 kg per device type
- Drive by means of geared stepper motor for constant shaking movements
- Protection class IP21 (according to EN 60529)
- Timer function from 1 min to 999 h 59 min
- Integrated emergency stop switch for maximum safety
- RS232 interface (9-pin) for documentation and external control

In addition, the system has a capacity of up to 12 bottles, depending on the selected variant. Thanks to versatile adapters, mixing cylinders or similar containers can be used in addition to standardised narrow-neck and wide-neck bottles. The recommended maximum container height is 290 mm with a maximum diameter of 136 mm. With its different model variants (for 4, 8 or 12 bottles), the device width ranges from 550 mm to 1110 mm depending on requirements, making the shaker easy to adapt to different laboratory facilities.

The maximum power consumption of 90 W ensures effective work with comparatively low energy consumption, while the sound pressure level remains below 60 dB(A). This is crucial for longer work phases, as noise sources should be reduced in laboratory environments.

Certifications and standards

The device fulfils the requirements of protection class I and overvoltage category II. It is designed for operation from 5 °C to 31 °C (up to 80 % relative humidity) and 32 °C to 40 °C (up to 50 % relative humidity, decreasing linearly). There is also a test basis based on IEC 61010 with regard to the sound pressure level. Users therefore benefit from safe and uncomplicated operation, even in demanding laboratory environments.

Concrete application examples

1. Cell cultures with high sedimentation potential: continuous overhead shaking keeps cell aggregates evenly distributed, which increases the homogeneity of the cultures.
2. Samples containing solids in environmental analysis: sludge and wastewater samples are thoroughly mixed so that test series in accordance with DIN 19529 can be precisely analysed.
3. Emulsions in the chemical industry: Sensitive emulsions, for example in the manufacture of cosmetic products, retain their consistency without excessive foaming.
4. Sedimentation tests in research and development: polymer suspensions and other highly viscous media can be kept in motion over the long term to minimise precipitation.

FAQs

How can the speed be precisely controlled?

The speed is controlled electronically via a geared stepper motor. This ensures that the speed remains precise and stable in all operating phases.

Do I need additional accessories for different bottle sizes?

Yes, various adapters can be purchased if required. These ensure that wide-neck bottles or other special containers can also be clamped stably.

What is the maximum total weight of the samples?

A load of up to 30 kg is permitted. This makes the system suitable for large samples with a high solids content.

Are there any special safety features?

In addition to an emergency stop switch, the device has an IP21 protection rating and a robust design. This means that samples and users are equally well protected.

What documentation options are available

Thanks to the RS232 interface, operating data can be read out and, depending on the software, saved directly on the PC.

Conclusion

This overhead shaker is a powerful and versatile option for laboratories and research facilities that need to mix samples continuously. Its robust design, wide speed range, timer function and flexible holding capacity make it the ideal tool for demanding applications. With safety-relevant features such as the emergency stop switch and protection class IP21, it also offers a well-thought-out concept for professional use. Anyone who values reliable results, simple operation and future-proof interfaces will benefit from the many features of this durable shaking system.