Julabo Ultra-Low circulator SL/HL

Julabo SL/HL Deep-Freeze Circulating Thermostat

The Julabo SL/HL Deep-Freeze Circulating Thermostat is designed for professional users in laboratories who require high-precision temperature control in the range from extremely low to high temperatures. This device stands for precise temperature control, flexible use and durability in demanding laboratory environments - from microbiology and environmental analysis to materials testing. Compared to conventional thermostats, this model impresses with its durability thanks to stainless steel components, an intelligent temperature control system and a wide range of applications combined with intuitive operation.

Performance features and technical highlights

The SL/HL circulating thermostat was developed for precise laboratory work that places the highest demands on temperature stability and versatility. Particularly noteworthy are the variable temperature control in the range up to +150 °C and the intelligent ICC (Intelligent Cascade Control) for fast and accurate temperature regulation. The robust stainless steel construction makes the device exceptionally durable and resistant, even under intensive use and frequent cleaning cycles.

The most important technical specifications include:

• Temperature range: Up to +150 °C, for demanding temperature applications
• Filling volume: Flexibly selectable between 5 and 39 litres, ideal for samples of different sizes
• Stainless steel bath vessels: Durable, corrosion-resistant and easy to clean
• Digital display: Clear display with selectable language (German/English), also for adjusting the pump output
• Large bath opening: Makes it easier to fill and remove samples or accessories
• Low noise level: For comfortable working, even in sensitive laboratory environments
• Robust pump connections: For reliable internal and external use

Additional features such as easy integration into external temperature control circuits and a wide range of accessories - including bath covers, cooling coils and support shelves - significantly increase flexibility and versatility.

Certifications and standards

The cryogenic circulating thermostat complies with all relevant EU directives and meets occupational safety and electromagnetic compatibility requirements to ensure reliable laboratory operation in accordance with international standards. ICC temperature control guarantees safe and constant temperature control, which is essential for quality control and standard-compliant testing in particular.

Typical applications in everyday laboratory work

Thanks to its precise temperature control and flexible usability, the system is suitable for numerous laboratory processes:

• Microbiological laboratories: Cultivation and controlled incubation of microorganisms, such as E. coli or yeast cultures, at defined temperatures
• Medical diagnostics: Sample preparation (e.g. blood analysis, serum preparation) and temperature control in analytical procedures, as well as cooling of sensitive reagents such as enzymes
• Material stress tests: Performing temperature cycling tests on plastics, metals or electronic components for quality and service life testing
• Histological examinations: Fixation and staining of tissue samples as part of tissue analysis
• Environmental analysis: Temperature-controlled analysis of water, soil or air samples, e.g. for heavy metal analyses or the determination of organic compounds

In addition, the device can also be used to simulate environmental conditions, for cryogenic applications and a wide range of temperature control tasks in chemical and pharmaceutical development.

FAQ

How are the stainless steel bath vessels cleaned?

Cleaning is straightforward: the device is switched off and allowed to cool down. The stainless steel vessels can then be cleaned efficiently with a mild detergent and water to remove any contamination without leaving any residue.

Can the thermostat also be connected to external systems?

Yes, thanks to robust connection options, the device can be easily integrated into external temperature control circuits. This supports, for example, the temperature control of reactors, double-walled containers or complex analytical devices.

What accessories are available and how do they expand the range of applications?

Bath covers (also hinged), cooling coils, shelves and special stainless steel covers are available as options. These complement the basic equipment and make the device usable for a wide variety of applications and sample preparations. How can the display language be changed? The language setting (German/English) can be adjusted directly via the clear menu. Parameters such as pump performance and alarm management can also be customised in the same area.

Conclusion

The SL/HL cryogenic circulating thermostat from JULABO offers an outstanding combination of precise temperature control, durable construction and a wide range of applications. It is the ideal choice for laboratories that demand maximum flexibility and reliability when temperature controlling a wide variety of samples and applications. Its sophisticated features, versatile accessories and compliance with standards make this system the preferred tool in any demanding laboratory environment.