Why the Milestone RotoSYNTH?

The limitations of the "conventional" laboratory microwave reactors.

The main limitation of most microwave reactors currently available on the market is their inability to properly mix heterogeneous reaction mixtures, particularly in case of ‘thick’ media. This limitation is even more evident when dealing with large quantities of solids. In such cases magnetic or even mechanical stirrers, although improving the bulk homogeneity, are not capable of achieving good results.

Heating solids by conventional systems leads to uneven temperature distribution, due to the poor heating transfer into the bulk of the material.
The outer temperature may be substantially higher than the inner one, because the material itself acts as insulator.

The use of microwave irradiation generally provides a much more homogeneous heating.
Anyway, being solids and porous materials good thermal insulators, the temperature tends to be higher in the middle, and lower toward the container walls.

The benefits of the RotoSYNTH

The RotoSYNTH enables a continuous fast mixing of the solids, induced by the rotation of the vessel. Coupling this effect with microwave irradiation, it is possible to obtain very homogeneous temperature distribution.

How the RotoSYNTH works

Milestone’s unique RotoSYNTH system consists of a state-of-the-art microwave platform, with a 45° tilted rotating reaction vessel.
The standard reactor is made of borosilicate glass and has a volume of 2 liters. It is provided with a built-in mixing/homogenizing device.
The monitor and control of the reaction temperature are assured by a dual (contact-less infrared and direct optical fiber) device. The dedicated software automatically reproduces the preset temperature/time profiles.
Furthermore, the RotoSYNTH allows operations under normal atmosphere and inert gas.
Another important feature is the possibility to evacuate the reactor or to remove and recover volatiles from solid supports during the microwave irradiation.