These coolers have an air-cooled coling circuit and are ideal for the following applications:
 - Cool smaller volumes down to -90 °C
 - Remove reaction heat
 - Replace tap water cooling

The lowest reachable temperature depends on the quantity of liquids, the type and viscosity of the cooled liquid and the bath insulation.

Immersion Cooler HAAKE EK20/EK30 (discontinued)
Used together with the Thermo SAHARA open-bath circulators, these coolers provide an alternative to tap water cooling. The lowest attainable temperature and the cooling down times are illustrated in the diagrams.
The EK20 is designed for baths with a 15 cm depth and the EK30 for baths with a depth of at least 20 cm.
Vessels of other sizes can also be cooled. End temperatures of -25 °C resp. -30 °C can be reached in a 5 l Dewar vessel.
The cooler EK 20 and EK30 had been discontinued are not longer available.

Immersion Cooler HAAKE EK45
This multi-purpose cooler has its own controller with digital temperature display, reaching temperatures down to -45 °C in a 5 l Dewar vessel. The controller enables temperature accuracy of approx. 1 to 2 °C. Improvement is possible using a stirrer.

Immersion cooler HAAKE EK90
This unit is designed for working temperatures down to -90 °C. The cooling coil is flexible and can therefore be adapted to suit virtually any bath shape. The minimum diameter of the vessel to be cooled is 110 mm.