Haake D1 Immersion Heating Circulator
The Haake D1 Immersion Heating Circulator is a compact laboratory temperature-control unit designed to provide controlled heating and active fluid circulation when mounted to a compatible laboratory bath or vessel. With a maximum operating temperature of approximately 105°C, analog temperature control, and an integrated heater and circulation pump, the D1 provides a simple and economical solution for routine heated laboratory applications.
Unlike a complete circulating water bath, the Haake D1 is an immersion circulator that can be paired with an appropriate open reservoir. This flexible configuration allows laboratories to select a bath size suited to their application while using the D1 to provide heating, temperature regulation, and continuous fluid movement.
Available used and refurbished from American Instrument Exchange, the Haake D1 is well suited for sample conditioning, reagent warming, chemistry procedures, viscosity studies, temperature-controlled reactions, and general laboratory heating applications. A 90-day warranty is included.
Key Features
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Maximum operating temperature approximately 105°C
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Heated immersion circulator
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Analog temperature control
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Integrated heating element
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Active fluid circulation
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Approximately 1,000 W heater on documented D1 configurations
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Designed for mounting to a compatible laboratory bath or vessel
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Provides improved bath uniformity compared with static heating
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Can support compatible external circulation applications
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Straightforward mechanical controls
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Compact laboratory footprint
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Useful for general-purpose heated temperature control
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Used, refurbished, and tested by American Instrument Exchange
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90-day warranty included
Overview
The Haake D1 is a classic laboratory immersion circulator designed to add controlled heating and fluid circulation to a compatible open bath.
Instead of incorporating a permanent reservoir, refrigeration system, and large housing, the D1 places its heater, temperature-control components, and circulation system into a compact immersion assembly. The unit can therefore be installed on an appropriate laboratory vessel to create a heated circulating bath.
This modular approach provides useful flexibility. Laboratories can select a bath volume and configuration appropriate for the intended samples or equipment rather than being limited to a permanently integrated reservoir.
Active fluid circulation is an important advantage over simple immersion heaters or static laboratory water baths. Continuous movement distributes heat throughout the bath and helps reduce temperature gradients around samples and laboratory vessels.
The D1 uses straightforward analog controls rather than a modern digital interface. For routine applications that do not require programming, data logging, or computer communication, this simple design can provide convenient and dependable temperature control.
Key Specifications
| Specification |
Details |
| Manufacturer |
Haake |
| Model |
D1 |
| Equipment Type |
Heated immersion circulator |
| Maximum Temperature |
Approx. 105°C for this AIE unit |
| Temperature Control |
Analog |
| Temperature Control Accuracy |
Approx. ±0.2°C on documented D1 systems |
| Heater Capacity |
Approx. 1,000 W on documented D1 systems |
| Circulation |
Active |
| Typical D1 Pump Flow |
Approx. 12 L/min |
| Typical D1 Pump Pressure |
Approx. 0.12 bar |
| Refrigeration |
No |
| Integrated Bath |
No on this immersion-circulator configuration |
| External Bath Compatibility |
Yes |
| Electrical Requirements |
Verify individual unit nameplate |
| Warranty |
90 days |
Common Applications
The Haake D1 can be used for a wide range of routine laboratory heating procedures. Typical applications include sample warming, reagent conditioning, incubation, chemical reaction control, viscosity studies, materials testing, calibration procedures, temperature conditioning, and general research applications.
The immersion design is particularly useful when laboratories need temperature control in a bath or vessel that does not already contain its own heater and circulation system.
For example, the D1 can be mounted to a compatible reservoir containing samples, bottles, reaction vessels, or other laboratory materials requiring controlled heating.
Active circulation continuously moves fluid around these items, improving heat transfer and helping maintain more consistent bath conditions.
The circulation capability can also support compatible external temperature-control applications when the equipment and plumbing arrangement are appropriate.
Ideal Laboratory Types
The Haake D1 is well suited for chemistry laboratories, pharmaceutical and biotechnology facilities, analytical laboratories, materials-science groups, quality-control departments, industrial R&D facilities, teaching laboratories, and academic research environments.
Its straightforward controls make it particularly appropriate for routine laboratory procedures where sophisticated programming is unnecessary.
The D1 can also be useful for laboratories maintaining established experimental methods that were originally developed around Haake circulating equipment.
Because the circulator can be paired with a compatible external bath, it also provides flexibility for laboratories that need a different reservoir configuration than a fixed-capacity benchtop water bath provides.
Temperature Control & Stability
The Haake D1 provides controlled heating up to approximately 105°C on this American Instrument Exchange unit.
Historical D1 systems are documented with approximately ±0.2°C temperature-control accuracy, making the platform suitable for many routine laboratory heating and temperature-conditioning procedures.
The heating element supplies thermal energy to the bath while the integrated circulation pump continuously moves fluid through the working area. This combination provides better heat distribution than an immersion heater operating without active circulation.
Actual bath performance depends on more than the controller alone. Reservoir volume, bath insulation, fluid type, ambient conditions, sample load, heat loss, and circulation pattern can all influence heating time and temperature uniformity.
The D1 does not incorporate mechanical refrigeration. Minimum attainable temperature is therefore determined primarily by ambient conditions and any separate cooling method used with the bath.
Circulation & Pump Performance
The Haake D1 incorporates active fluid circulation to improve temperature distribution within a compatible bath.
Historical D1 bath systems are documented with circulation performance of approximately 12 L/min and maximum pump pressure around 0.12 bar. These figures are useful for understanding the general capabilities of the D1 platform, although actual performance should be verified when a specific external circulation requirement must be met.
For internal bath applications, continuous circulation moves heated fluid around samples and vessels and reduces localized hot and cold areas.
The D1 can also support compatible external temperature-control arrangements when properly configured.
Actual external flow will depend on tubing diameter and length, fittings, fluid viscosity, operating temperature, elevation, and hydraulic resistance within the connected equipment.
Customers requiring a specific minimum flow or pressure should provide those requirements before purchase so American Instrument Exchange can evaluate the individual unit and proposed application.
Refurbishment & Testing
This used Haake D1 Immersion Heating Circulator is refurbished and tested by American Instrument Exchange before shipment. Our technicians inspect the heater, circulation pump, analog temperature controller, temperature-sensing components, electrical system, mounting hardware, fluid-contact components, and associated safety controls.
Temperature-controlled equipment is tested using NIST-traceable probes and data loggers. The D1 is operated in an appropriate test bath to evaluate heating, circulation, temperature regulation, controller operation, and overall system stability.
Fluid-contact components are cleaned and inspected before shipment, and the unit undergoes final operational testing before being prepared for delivery.
Customers requiring the D1 for a particular operating temperature, bath size, or external circulation application are encouraged to provide those requirements before shipment. When practical, American Instrument Exchange can incorporate customer-requested operating conditions into final testing.
A 90-day warranty is included with this refurbished Haake immersion circulator.
Choosing the Right Immersion Circulator
The Haake D1 is particularly useful for laboratories that need controlled heating and circulation but do not require mechanical refrigeration or a permanently integrated bath.
Its immersion configuration provides flexibility because the circulator can be paired with an appropriately sized compatible reservoir. This can be advantageous when a standard fixed-capacity laboratory water bath does not provide the desired working area.
Compared with a basic immersion heater, the D1 adds active fluid circulation and temperature regulation. These features help improve temperature distribution and provide more reproducible bath conditions.
Compared with a complete refrigerated/heated circulator, the D1 is considerably simpler. It does not provide active refrigeration and is therefore not the appropriate choice when reliable subambient operation is required.
Laboratories requiring only routine heating, however, may not need the additional refrigeration components, size, or complexity of a refrigerated system.
American Instrument Exchange can help compare available used and refurbished immersion circulators and complete circulating baths based on maximum temperature, bath size, circulation requirements, cooling needs, and intended application.
Related Equipment
American Instrument Exchange stocks a range of laboratory circulators, including Haake immersion circulators, heated circulating baths, refrigerated circulators, recirculating chillers, and immersion coolers. Laboratories considering the Haake D1 may also want to compare available laboratory water baths, reactors and fermenters, evaporators and extractors, and other refurbished laboratory equipment.
Haake D1 Frequently Asked Questions
What is the Haake D1?
The Haake D1 is a heated immersion circulator designed to provide temperature-controlled heating and active fluid circulation when installed on a compatible laboratory bath or reservoir.
What is the maximum temperature of the Haake D1?
American Instrument Exchange lists this Haake D1 for operation up to approximately 105°C.
Does the Haake D1 include refrigeration?
No. The D1 is a heating circulator and does not incorporate mechanical refrigeration.
Does the Haake D1 include its own bath?
This listing is for the D1 immersion circulator rather than a complete integrated bath system. Haake also paired D1 circulators with dedicated baths in complete systems.
How accurate is the Haake D1?
Historical specifications for D1 systems indicate temperature-control accuracy of approximately ±0.2°C under appropriate operating conditions.
What is the circulation rate of the Haake D1?
Historical D1 bath configurations are documented with approximately 12 L/min circulation and maximum pump pressure around 0.12 bar. Customers with specific external flow requirements should have the individual unit evaluated for their application.
Can the Haake D1 circulate fluid through external equipment?
The D1 circulation system can support compatible external temperature-control arrangements when appropriately configured. Actual flow will depend on the resistance of the complete circulation circuit.
What size bath can be used with the Haake D1?
The appropriate reservoir depends on the mounting arrangement, fluid volume, operating temperature, sample load, and heating requirements. Because this D1 is an immersion circulator, bath capacity should not be confused with the 3 L capacity of some complete Haake D1 bath systems.
Is the Haake D1 suitable for temperatures below ambient?
Not by itself. The D1 provides heating but no mechanical refrigeration. Reliable subambient operation requires an appropriate external cooling source or a refrigerated circulator.
Does this refurbished Haake D1 include a warranty?
Yes. This used Haake D1 is refurbished and tested by American Instrument Exchange and includes a 90-day warranty.
