ETHOS One  safety and control

Microwave Hardware

The chassis of the ETHOS One is made of corrosion-resistant stainless steel; the cavity and the door are plasma-coated with PTFE to protect the unit.
Additionally, the ETHOS One features a full stainless steel door with an innovative opening and self-resealing mechanism.
The door is mounted on spring-loaded steel bars. If for any reason there is a sudden overpressurization of the cavity, it opens slightly for rapid and safe release of the overpressure and microwave power is instantaneously cut off. Immediately afterward, the door is pulled back by the spring, resealing the cavity. This is the same, ingenious principle of selfresealing employed in the Milestone pressure vessels!
Furthermore, an automatic door locking system does not allow the user to open the door of the unit during the course of the microwave heating program and until the solutions have been cooled down to a preset temperature value, avoiding misuse of the instrument and in turn exposure of the chemist to high pressure vessels. This further enhance the overall safety of the ETHOS One.

‘Vent-and-Reseal’ Vessels

The ‘vent-and-reseal’ vessels are the foundation of Milestone’s leadership in microwave digestion technology. Continuously enhanced, this patented (US Patent 5,270,010) technology provides the operator with unsurpassed safety and performance capabilities. While other devices use membranes or burst disks that render a vessel useless after venting, the Milestone system releases only the excess pressure from the vessel. This ensures that there is no stress to the door of the microwave system, as it could happen in the case of a vessel’s bursting.

Contact-Less Pressure Control in All Vessels

The ETHOS One offers the possibility to control the pressure in all vessels via a contact-less sensor; the sensor, in combination with the ‘ventand- reseal’ technology and the EasyCONTROL software, ensures complete and safe digestions without any loss of volatile compounds, and it perfectly complements the ETHOS One pressure-responsive door.

Contact-Less Temperature Control in All Vessels

The ‘TEMP-SURE’ feature allows for accurate and precise temperature control in all vessels. This unique state-of-the-art system includes a direct temperature control device and an infrared sensor, both interfaced to a microprocessor-controlled rotor positioning system. As a result, the actual temperature profiles of all vessels are shown on the display of the control terminal. This is a clear benefit for the full control and safety of the sample preparation process.

Better Control of Exothermal Reactions

With the EasyCONTROL software, the digestion temperature is controlled during the complete course of the run, and not just at a set point. This allows a better control of exothermic reactions.