Laboratory cryostats provide precise, reliable temperature control for scientific, industrial, and clinical applications requiring consistent cooling performance. John Morris Group supplies a focused range of refrigerated circulators and cryostat units from Julabo and Peter Huber Kältemaschinenbau, designed for internal bath cooling and external application temperature control across research laboratories, quality assurance facilities, and process environments throughout Australia.
Cryostats
Laboratory Cryostats for Temperature-Critical Applications
Refrigerated circulators and laboratory cryostats are essential for workflows that depend on stable, repeatable temperature conditions. Common applications include temperature control of viscometers, refractometers, photometers, reaction vessels, and chromatography columns. Our range from Julabo covers compact cryo-compact circulators through to high-performance ultra-low refrigerated heating circulators, with working temperature ranges from -50 °C to +200 °C depending on the model series.
How to Select the Right Laboratory Cryostat
Choosing the correct cryostat or refrigerated circulator depends on several factors specific to your laboratory or process environment:
- Working temperature range: Determine whether your application requires cooling only or combined heating and cooling. Standard models cover -20 °C to +200 °C, while ultra-low variants reach -90 °C for extreme condition testing.
- Internal vs external application: If you need to cool samples directly in the bath, an open-bath cryostat is suitable. For temperature control of connected instruments or jacketed vessels, select a model with strong pressure and suction pump performance.
- Footprint and installation: Compact cryo-compact circulators fit under fume hoods or in tight bench spaces, while larger floor-standing units deliver higher bath volumes and cooling capacities for demanding industrial processes.
- Pump performance and flow rate: Match the circulator pump output to the pressure drop and volume of your external application to maintain stable temperature delivery across the entire system.
Typical B2B Applications for Refrigerated Circulators
Laboratory cryostats and refrigerated circulators serve a wide variety of professional and industrial use cases:
- Analytical chemistry: Temperature control of measuring cells, polarimeters, and spectrophotometers for accurate, repeatable readings.
- Pharmaceutical and biotech: Maintaining reaction vessel temperatures during synthesis, fermentation, and stability testing.
- Petrochemical testing: Freezing point determination, pour point analysis, and cold flow property testing under controlled low-temperature conditions.
- Materials testing: Simulating extreme thermal conditions for reliability and performance qualification of components and coatings.
- Food and beverage QC: Controlling sample temperatures during viscosity, density, and refractive index measurements.
Explore Related Laboratory Equipment Categories
To support broader temperature control and sample management workflows, explore these related categories from our Laboratory and Scientific Equipment range:
- Circulating baths: Open and closed bath systems for general-purpose heating and cooling.
- Immersion circulators: Drop-in heating circulators for existing bath vessels.
- Laboratory chillers: Dedicated recirculating coolers for heat removal from instruments and processes.
- Water baths: Standard and shaking water baths for routine laboratory heating.
Trusted Temperature Control Support Across Australia
Established in 1952, John Morris Group is an ISO 9001 certified supplier of laboratory and scientific equipment. Our factory-trained engineers assist with product selection, installation guidance, and ongoing technical support for cryostats and refrigerated circulators. With nationwide service coverage and deep expertise in temperature control applications, we help laboratories, research institutions, and industrial facilities source the right equipment for their specific requirements. Contact our technical team on 1300 501 555 to discuss your cooling application.
Frequently Asked Questions
What is the difference between a cryostat and a refrigerated circulator?
In laboratory temperature control, the terms are often used interchangeably. A cryostat generally refers to any device that maintains low temperatures, while a refrigerated circulator specifically combines a refrigeration unit with a pump to circulate cooled (or heated) fluid through internal baths or external applications. The Julabo range available through John Morris Group functions as refrigerated circulators with cryostat-level cooling performance.
How do I choose the right bath fluid for my laboratory cryostat?
Bath fluid selection depends on the working temperature range. Water is suitable for applications between +5 °C and +90 °C. For temperatures below +5 °C or above +100 °C, a dedicated thermal fluid (such as silicone oil or glycol-based fluids) must be used. Always consult the manufacturer's guidelines to ensure fluid compatibility with wetted materials.
Can refrigerated circulators be used for external application temperature control?
Yes. Most models in the Julabo range feature integrated pump connections for external temperature control of instruments such as viscometers, refractometers, reaction vessels, and chromatography columns. Select a model with sufficient pump pressure and flow rate to match the pressure drop and volume of your external system.