OHAUS Guardian 7000 heating stirrer

OHAUS Guardian 7000 heating stirrer

This advanced solution for laboratory applications combines reliable heating and stirring in one device. With its sophisticated sensor technology and innovative safety features, this digital heating stirrer is ideal for temperature-sensitive chemistry and biology applications where uniform temperature distribution is essential. Thanks to its robust design, easy-to-read display and versatile application options, the device offers a decisive advantage over many comparable models on the market: it guarantees maximum precision and convenience for all stirring and heating processes.

Powerful features for safe and precise work

The Guardian 7000 series from OHAUS impresses with numerous functions that guarantee high reliability, the best possible user safety and long-term performance in demanding laboratory environments. Particularly noteworthy are:

- Heating and stirring in a single operation: Versatile application options for dissolving, heating or boiling solutions up to 500 °C (with the ceramic plates)
- High capacity: Models for liquid volumes of up to 20 litres, ideal for large sample volumes
- Precise speed range: From 60 to 1600 rpm with a stable control of ±2 % so that liquids are evenly mixed
- SafetyHeat function: An integrated monitoring system with double safety that switches off in good time in the event of potential overheating
- SmartPresence and SmartLink technology: Recognises users in close proximity and protects the laboratory by automatically deactivating the heating system if no one is at the device for an extended period of time (Bluetooth dongle available as an accessory)
- Easy calibration: Five adjustable temperature points for the heating plate and sensor to ensure reproducible results
- Robust construction: ceramic or aluminium plate, tempered glass in the front and chemical-resistant surfaces for a long service life

The ceramic models reach temperatures of up to 500 °C, while the aluminium versions are ideal for rapid heat transfer up to 380 °C. A powerful motor ensures a homogeneous mixture, even at higher viscosities, while the magnetic clutch enables safe stirring without stalling the stirring core. In addition, the backlit LCD display provides you with precise information about the temperature, speed and timer at all times.

Certifications and standards

All models have TÜV safety certification to guarantee users reliable quality and standard-compliant operation. The IP21 degree of protection also indicates that the devices are protected against dripping water and are ideally equipped to protect against splashes and moisture in everyday laboratory work.

Application examples

This heating and stirring system scores highly in many areas of the laboratory and research thanks to its efficiency and safety. Typical areas of application include:

- pH optimisation in biotechnology: targeted heating of buffer solutions protects sensitive organic substances
- Endothermic reactions in synthesis laboratories: precise temperature control enables controlled reaction conditions in sensitive chemical processes
- Media preparation in microbiology: Uniform dissolution of agar, culture media and protective reagents
- Sterilisation and fixation processes: Suitable for targeted heating until unwanted microorganisms are killed, for example when handling heat-resistant materials

Thanks to its flexible use in a wide temperature and speed range, the device can also be used for the gentle boiling and evaporation of solvents, the dissolution of powders in liquids and for routine QC work in the pharmaceutical industry. Frequently used substances such as buffers, organic solvents or culture media benefit from constant and precisely adjustable temperatures.

FAQ

How can the temperature on the device be set particularly precisely?

The device ensures precise temperature measurement directly in the sample using the temperature probe (Pt1000) supplied. In addition, the ramp for heating and cooling can be individually adjusted using SmartRate.

Does the outer surface of the stirrer remain cool?

The so-called SmartHousing is designed so that the housing remains cool even at high temperatures. Chemical-resistant materials ensure that the surface is easy to clean and increase safety in the laboratory.

Can different ramp programmes be stored?

Recurring applications can be programmed via USB connection and SmartLink technology. This allows defined ramp profiles to be reproduced at any time, which speeds up the workflow, especially for sensitive processes.

How easy is maintenance?

Cleaning is straightforward, as all components, from the glass console to the ceramic or aluminium-coated heating surface, are chemically resistant. If required, a protective cover can be added to further increase the service life.

Is operation also possible when wearing gloves?

The illuminated operating buttons are large and respond reliably, even when users are working with laboratory gloves. The display remains easy to read and ensures safe handling.

Conclusion

With its combination of safety, performance and flexible application options, the OHAUS Guardian 7000 heating stirrer is an indispensable tool in modern laboratories. Thanks to integrated protection functions, extensive calibration options and intelligent technologies, the system is ideal for precise and reliable processes. Whether in chemical synthesis, microbiological studies or biotechnological research, this digital heating stirrer offers a high level of control and safety, allowing users to carry out their experiments and procedures efficiently.