Hoefer PS300-B Electrophoresis Power Supply

The Hoefer PS300-B Electrophoresis Power Supply is a versatile laboratory instrument designed to provide controlled electrical power for a wide range of electrophoresis applications. Manufactured by Hoefer, this power supply is commonly used in molecular biology, biochemistry, biotechnology, pharmaceutical research, academic institutions and life science laboratories. It provides reliable voltage and current regulation for separating nucleic acids and proteins through electrophoretic techniques.

The Hoefer PS300-B is designed to support different electrophoresis procedures, including SDS-PAGE, native PAGE, DNA electrophoresis, RNA electrophoresis, horizontal agarose gel electrophoresis and protein transfer applications. Its adjustable electrical output allows laboratory professionals to select appropriate operating parameters according to the experimental requirements and electrophoresis apparatus being used.

One of the major advantages of the PS300-B is its dual constant-voltage and constant-current operating capability. Users can select either constant voltage or constant current mode depending on the application. The instrument also incorporates automatic crossover functionality, which automatically switches between voltage and current regulation when the selected operating limit is reached. This helps maintain controlled electrical conditions during electrophoresis procedures.

The instrument provides an adjustable voltage output ranging from 10 to 300 V in 1 V increments and a current output ranging from 4 to 500 mA in 1 mA increments. With a maximum output power of 90 W, the PS300-B is suitable for a variety of routine laboratory electrophoresis applications. These specifications make it particularly useful for running mini protein gels, multiple PAGE gels and other compatible electrophoresis systems.

The PS300-B features a three-digit red LED digital display that allows users to monitor operating parameters and instrument status. Its membrane keypad incorporates simple control buttons for selecting operating modes, adjusting voltage and current settings, programming the timer and controlling the electrophoresis run. The straightforward interface makes the equipment convenient for routine laboratory operation.

Another important feature is its four pairs of 4 mm output connectors. These output terminals operate in parallel and allow multiple compatible electrophoresis systems to be connected simultaneously. All four output pairs operate at the same voltage, while the combined output current is limited to 500 mA. This configuration makes the instrument useful for laboratories conducting multiple electrophoresis experiments at the same time.

The Hoefer PS300-B also includes a programmable timer that supports continuous operation or timed runs of up to 999 minutes. This allows users to perform electrophoresis experiments according to specific time requirements without continuously monitoring the equipment. The timer can be configured through the front control panel.

For improved operational reliability, the instrument incorporates several protective functions, including open-circuit detection and short-circuit protection. It also provides automatic recovery following a power interruption. These safety and operational features help protect the instrument and connected electrophoresis systems during laboratory procedures.

The compact design and integrated carrying handle make the PS300-B convenient to position, transport and use in different laboratory environments. Its relatively small footprint helps save valuable bench space while providing the electrical output required for standard electrophoresis applications.

In molecular biology laboratories, the Hoefer PS300-B can be used for DNA and RNA separation, protein electrophoresis and gel-based analytical procedures. In biotechnology and pharmaceutical research laboratories, it supports protein analysis, sample characterization and electrophoretic separation techniques. It can also be used in university research departments, diagnostic research facilities and industrial laboratories.

The instrument is compatible with suitable electrophoresis tanks, gel chambers and transfer systems that operate within its electrical output specifications. Its constant-voltage and constant-current modes provide flexibility for different experimental protocols, while its multiple output connections support efficient laboratory workflows.

The Hoefer PS300-B Electrophoresis Power Supply is a practical solution for laboratories seeking a compact, adjustable and versatile electrophoresis power source. Its digital interface, programmable timer, automatic crossover, multiple output terminals and built-in protection features make it a valuable instrument for routine molecular biology and biochemical research.

Overall, the Hoefer PS300-B combines controlled electrical output, convenient operation and versatile electrophoresis compatibility, making it suitable for academic, biotechnology, pharmaceutical and research laboratory applications.

Application of Product

1. SDS-PAGE protein electrophoresis.

2. Native PAGE protein separation.

3. DNA electrophoresis.

4. RNA electrophoresis.

5. Horizontal agarose gel electrophoresis.

6. Protein separation and characterization.

7. Western blotting and compatible protein transfer procedures.

8. Semi-dry protein transfer applications.

9. Molecular biology research.

10. Biotechnology and pharmaceutical research.

11. Biochemistry laboratory experiments.

12. Academic and industrial research applications.

2.2 Features of Product

• Dual constant-voltage and constant-current operation.

• Automatic crossover between voltage and current modes.

• Adjustable voltage output from 10 to 300 V.

• Adjustable current output from 4 to 500 mA.

• Maximum output power of 90 W.

• Four pairs of parallel 4 mm output connectors.

• Three-digit red LED digital display.

• Easy-to-use membrane keypad.

• Programmable timer up to 999 minutes.

• Continuous and timed operation.

• Automatic recovery after power failure.

• Open-circuit detection.

• Short-circuit protection.

• Compact benchtop design.

• Integrated carrying handle.

• Suitable for multiple electrophoresis techniques.

2.3 Technical Specifications

Specifications based on the manufacturer's product information and operating manual.

2.4 Product Condition

Condition: Used / Refurbished – To be confirmed for this particular unit.

• Physical appearance: As shown in the product photograph.

• Display: Digital LED display present.

• Output terminals: Four pairs visible on the front panel.

• Operational status: Subject to electrical and functional testing.

• Accessories: Power cable and electrophoresis leads subject to availability.

• Calibration and output verification: To be confirmed.