Memmert WNB 22 water bath: precision, safety and performance for the laboratory
The Memmert WNB 22 water bath is a high-performance piece of laboratory equipment, specifically designed for tasks requiring precise temperature control and optimum safety. This professional 22-litre model combines high-quality materials, efficient control technology and a robust stainless steel construction to meet the most stringent requirements of research laboratories, quality control and biomedical analysis.
Its adjustable temperature range between +10 °C and +95 °C, with an additional boiling mode, allows for a wide range of applications. Whether for thawing, incubation, enzymatic digestion or the preparation of culture media, the WNB 22 ensures stable and homogeneous temperature control. The operating temperature starts at just 5 °C above the ambient temperature, optimising energy efficiency while ensuring safe operation.
One of the major advantages of the WNB 22 is its integrated heating system on three sides, which ensures uniform heat distribution throughout the chamber. This system prevents hot spots and protects sensitive samples. At the same time, the class A Pt100 temperature sensor in a 4-wire circuit ensures accurate, reliable and constant measurement. The digital control allows the set and actual temperatures as well as the remaining time to be viewed on a clear, easy-to-read LED display with a resolution of 0.1 °C.
The water bath has numerous integrated safety features. In the event of overheating, a mechanical temperature limiter automatically switches off the heating at 30°C above the maximum permitted temperature. A second safety feature switches off the heating at 10 °C above the set temperature, ensuring the protection of users and samples. In addition, the PID controller is equipped with a self-diagnostic system with error display, which facilitates the rapid identification of any malfunctions.
The inner chamber, with a useful capacity of 22 litres, is made of 1.4301 stainless steel (ASTM 304), with pressed ribs and a laser-welded finish for optimum durability and hygiene. Its design facilitates cleaning and regular maintenance. The liquid level is adjustable between 177 mm and 200 mm, allowing precise adaptation to protocol requirements.
The WNB 22 is easy to install thanks to its compact dimensions (578 x 405 x 436 mm) and a net weight of only 16 kg. Its textured stainless steel outer casing, like its internal structure, is highly resistant to corrosion. For added safety, the device must be installed with a minimum clearance of 80 mm around and 750 mm above to ensure proper ventilation.
With a power rating of 2000 W and a power supply of 230 V (50/60 Hz), the WNB 22 is both economical and efficient. It complies with international safety standards and can be transported safely thanks to its suitable packaging.
