The Nassenheider universal evaporator is a long-term evaporator for continuous evaporation of 60% formic acid. The universal version of the Nassenheider evaporator replaces the old versions of the Nassenheider evaporator.
Do you need a reliable method for applying medicinal solutions in your bee colony? The Nassenheider UNIVERSAL H is among the proven evaporators for use directly in hive boxs. The practical twin pack contains two complete units designed to be built into frames, so you can effectively treat two bee colonies simultaneously and without unnecessary interventions in hive operation.
The device works on the principle of controlled and long-term stable evaporation of liquid inside the super. The patented construction ensures smooth and even evaporation for up to 10 or more days (depending on the chosen setting and conditions in the hive), even with fluctuating outdoor temperatures. Stable evaporation process is essential for effective treatment of the bee colony and simultaneously minimizes stress and excessive disturbance to the bees.
The evaporator is equipped with a closable container with a volume of 300 ml with a clear scale for checking the fill level. This capacity allows for longer-term action without the need for frequent refilling, which you will appreciate especially with strong production colonies. The construction is designed to match commonly used frame dimensions and allow easy integration into the hive.
The set is designed as a complete solution for mounting in two frames (frames are not included in the package). It contains:
2× Nassenheider evaporator with 300 ml container
2× protective basket for wick
12× wick (for each set 3 sizes for regulating evaporation intensity)
4× insert textile (absorbent cloth)
8× stainless steel screw for secure hive box to frame
detailed assembly and use instructions
Installing the evaporator into an empty frame is simple and can be handled by any beekeeper with common tools. Using the included stainless steel screws, you securely attach the device to a frame with appropriate internal dimensions. We recommend using a solid and well-preserved frame that holds its shape well.
Bees have a natural tendency to seal new elements in the hive with propolis or damage softer materials such as textiles and wicks. For longer device lifespan, it is advisable to protect the absorbent textile and the lower part of the frame with fine beekeeping mesh or screen. This will limit mechanical damage without affecting the evaporation function.
Before installation, we recommend verifying compatibility with the frame size you use. Below we list the key dimensions of the device:
| Parameter | Value / Description |
| Device length | 250 mm (minimum internal frame length) |
| Device height | 130 mm (minimum internal frame height) |
| Width (depth) | 35 mm (slightly exceeds the width of a standard frame) |
| Container volume | 300 ml |
| Screw material | Stainless steel |
| Regulation method | Interchangeable wicks (included in package) |
Instructions for using the Nassenheider formic acid evaporator