OHAUS 2-block heating block
The OHAUS 2-block heating block is a precisely developed laboratory unit that ensures uniform temperature distribution and can be used for a wide range of sample preparation applications. Whether for incubating cell cultures, denaturing nucleic acids or for melting point testing: This heating block enables precisely adapted temperature control thanks to various digital and analog models. Compared to similarly designed devices, it impresses with its high efficiency, excellent temperature stability and extensive range of accessories that can be tailored to different applications.
Versatility and efficiency in temperature control
The robust block heater is available in several versions (HB2DG, HB2AL, HB2DGHL), allowing laboratories to adapt to their specific needs. Digital versions offer precise control options and reproducible temperature stability, while the analog model is a cost-effective yet reliable alternative. Both versions are designed for durability and ease of use: Module blocks can be changed quickly without tools, saving time and keeping the ongoing work process efficient.
The close contact surface between the sample vessel and block also ensures excellent heat transfer and shortens the heating time. In addition, some digital models have a heated lid that minimizes condensation and thus maintains sample integrity. To ensure accurate measurement results, a single-point calibration function is available, which is ideal for adjusting temperature setpoints to external standards.
Important features at a glance
- Temperature ranges: From 5 °C above room temperature up to a maximum of 150 °C (depending on model)
- Control options: Digital or analog, depending on your needs and budget
- Homogeneity: Constant temperatures from ±0.1 °C to ±0.4 °C (depending on model) at 37 °C
- Stability: High accuracy of ±0.2 °C in digital variants, ±2 °C in analog models
- Fast heat-up time: Ready for operation in around 16 minutes
- Timer function: Up to 9999 minutes for the digital versions
- Safety functions: Override protection of 10 °C above the setpoint and CE/TÜV certification
In addition, all versions measure 39.1 x 8.9 x 20.3 cm or 39.1 x 17.8 x 20.3 cm (HB2DGHL) and weigh between 2.8 kg and 3.1 kg. They are equipped with a painted steel housing and an additional tripod rod holder, which allows convenient attachment of various accessories. Thanks to their robust and compact design, they fit easily into laboratory benches and are easy to transport.
Certifications and standards
All models meet important safety standards. CE and TÜV certificates ensure that the heating block complies with current regulations. There is also an overtemperature cut-out that automatically reduces the device as soon as the preset limit is exceeded by 10 °C. This significantly increases safety in everyday laboratory work, especially when working with sensitive or reactive substances.
Concrete application examples
- Incubation of enzymes: thanks to precise temperature control and homogeneous heat distribution, enzyme reactions can be carried out efficiently without risking yield losses with sensitive proteins.
- Nucleic acid denaturation: The constant heat development is ideal for safely heating RNA or DNA and unfolding them in a controlled manner.
- Immunoassays: For laboratory tests that require a constant temperature, the digital versions are indispensable as they minimize deviations and support reliable signal intensity.
- Melting point determinations: Whether for organic substances or pharmaceutical samples, the precisely controlled temperature allows accurate determination of the melting or boiling point.
FAQs
How accurate is the temperature calibration
?
The digital versions have a single-point calibration function that can be used to adjust specific setpoints. Simply compare the temperature with an external reference thermometer and adjust accordingly on the heating block.
Does the analog model require a separate thermometer?
Yes, analog models require an external thermometer or additional temperature device to accurately determine and monitor the setpoint.
Which sample tubes can be used
The module blocks are available in over 40 variants and thus cover numerous tube sizes and types. This means that Eppendorf Tubes, Falcon Tubes and other tube formats can be securely clamped.
Is the heated lid absolutely necessary?
It is particularly useful for applications where condensation can lead to inaccurate results, for example with sensitive DNA samples or in the field of protein research. However, the lid can be removed as required.
Conclusion
This reliable and versatile device underlines the importance of precise temperature control for consistent, reproducible laboratory results. Thanks to fast heat-up times, robust steel housing and easily replaceable module blocks, laboratories can work flexibly and efficiently. The different versions cover a wide range of applications, providing a solid foundation for anyone who needs a high-quality and reliable heating solution.
